I'm glad I ran across your video. I tried watching other videos and reading how-tos. None of them made sense to me as they weren't explaining how the relay works. They were only showing how to test with whatever relay they had on hand. It didn't help at all. After your video, I can test my relays in seconds and now that's I know how they work I'll never forget this how.
Ive been wrenching for 10yrs and been avoiding electrical testing. Time to take it head on as I'm doing lots of repairs as a side job for extra income. Once i master my diagnosis skills my price is going up!
Relays and solenoids are considered high current switches a lot of people are unaware of this. Yes the control side 85/86 is switched by the computer most times in an automotive application. Great video and I love that meter.
Thanks. You explained the 87a which the other videos didn't make as clear. I ordered a repair manual. I hope the wiring diagrams are helpful. Getting prepped so when my starter doesn't turn over next time I can see if bypassing the relay will work and start to narrow down my problem.
This actually sense to me now. I still have questions and some confusion as to why a relay works for a short period then stops. However I now can begin going back through my system
I didn't have a 12-volt battery so I used a 12v battery tender for power. It performed both tests perfectly without worrying about damaging the relays.
This was really cool - I would love to see more about this. Specifically how you walk through a real problem when it's not some major component like a relay or a fuse. I'm dealing with a fuel pump that's not working. Motorcycle sat for 8 years with fuel in the tank so I knew I needed to replace it. Since I was already in the tank, I replaced everything previously in the tank....the fuel pump, pressure regulator, fuel filter, float sending unit, all fuel hoses, wiring harness. Now the problem is when I turn on the ignition, the pump still doesn't sound. I added 2 gal of gas and still nothing. I even made a long hook so I could manually change the float sending unit and the level on the fuel gauge didn't change. SO I'm thinking it's not getting any power to the pump. Fuses were fine - I checked the continuity and they're great. Changed both relays cuz they're old and cheap....still nothing. NOW I'm going to have to test the voltage at the relay and walk it forward but I don't know exactly how to do that. I'm also thinking I should check the plug on the outside of the tank that delivers power inside the tank. However I tried doing that but I'm honestly not sure if what I'm seeing is what it should be. It's confusing when you've never done this stuff.
Diagnostic question maybe answered from this video. I had clicking lights in the interior and windshield wipers. They drained my battery. I am going to try this now! Thanks for the great video. Easy to understand
I had a little understanding of relays, when I tried to add fog/driving lights on my '72 Toyota Corolla & a little background in electronics. However, I never completely understood what the numbers stood for & exactly which terminals did what, even though I successfully wired the lights. Now, as an old guy, you helped really understand. Thanks!!!
I'm in the exact same situation. Took electronic classes in HS and learned more in the army. Being in my late 50s, I am finally a pro with relays. Lol.
My only quibble is that it's not a resistor between 85 and 86, it's a coil that, when energized, creates the magnetic field to pull the relay switch to close the 87 and 30 contacts.
Sir, YOU make this video easy to watch. your teaching mannerisms are most helpful. thank you for breaking it down to my level. great stuff. I subbed based on this video.
Excellent Video, great explanation of Relay functions. Love the test board and your Stainless Table to write on . Great Camera angle also 🙏God Bless You.
Can I just use a spare 12 volt mower battery with some alligator clip wires to energize the relay while testing? Do I risk damaging relay? GREAT video and explanation
This works sometimes: bang on relay. I had a horn relay that would not work. So I disconnected battery. Tugged, poked, whacked and shook relay. Would not come out. Read it had to be replaced with whole relay tray, or cut out. Hooked up battery to call it a night and presto it worked. I guess it was just stuck with a little corrosion. If does it again I'll drill 3 tiny holes in the top and spray silicone spray into relay to possibly fix corrosion issue for long time.
Question my battery cable end keeps coming loose alternator changed funs fine for a month then bam everything dies battery was 13 when started alternator shows 15 amps im getting so upset paying all these people to fix my car the battery end is not the normal ends that most vars have please help 2011 3.6 chevy Malibu ltz any help please
AWESOME VIDEO!👍🏽🇺🇲 AND THE MOST HELPFUL IN EXCELLENT DETAILS! 👌🏽🇲🇽 YOU EVEN BOTHER TO GIVE US ADVICE AND LINKS ABOUT MULTIMETER THANKS A LOT MAN! 🇲🇽🤜🏽💥🤛🏼🇺🇲
Great Video 😊. Im checking a random no start with a single click in a old 96 Toyota Camry. Can a relay switch sometimes work and sometimes not? Any information would be greatly appreciated. Thank you.
This was a great video. Thank you. I’m wondering…can you then reverse and remove a component from this? If it’s a 5 prong feeding a faulty antitheft system preventing a vehicle from starting, can we eliminate the system and put a four prong to bypass?
Because of the way you explained how to test a 4 pin and5 pin relay, I believe that I will be able to test a few relays on my 1999 GMC Sierra truck. I noticed that you used a 12 volt battery with two short wires plugged into it. Where can I get a battery and the two short wire pieces from? I see that I can get the set of wire leads with the alligator ends attached from amazon.
😮🎉😮🎉😮🎉---😊, WOW! Thank you so much for taking the time to make this video too inform me about the routes electricity takes when ground/12 volt / 85/87A/420/69 etc .. ..... .. . My experiments haven't been as fulfilling as I know they were many moons ago. Installing these relay switches inside of the cranium of two species of saltwater fish. I could not get the wiring correct from the electrical brain diodes running to the tail then to the relay fuse and of course it grounded to a hollow bone in the jaw. Then wired to the fins, and from the fins to the 12 volt battery installed exterior of the scales. I couldn't tell you how many salmon I use for practice and I had very neat effects/ movements on command, forward left right and even reverse. It isn't a very good backup job reversing for the fish but it tries even though it doesn't know what it's doing. sounds out of the voice box ( fish don't have specialized vocal cords or larynx's so the most popular way is through a tribulation, the same way crickets makes sounds the fish rubs two phones together or clicks producing audible 112 decibels mimicking music or songs that are being played through underwater sonar speakers. And of course all the tones are in the range of the eardrum that the earthworm grows naturally.. But everybody knows that. (The unnatural eardrums have never worked going back to 19 63 when Klaus Schmidt revolutionized the hearing aid affects/quality for the endangered scouts that were trapped inside of the cave during the mining accident in Mexico. I digress 🤔 I lost my concentration where was I..... Oh yeah! So I got the huge fish wired up with the relay on the interior of the cranium with the 12 volt battery that is securely placed on the dorsal fin. With no holes or anything drilled into the fish because the last thing I would want to hurt would be the beautiful beautiful experimental fish. If anybody would be interested in the conclusion of the first round after this kind TH-camr gentleman taught us all about relays, I'm happy too provide my link to the science paper that is peer-reviewed by my peers at the institute.
Between 85 & 86 you refer to it as a resistor. It’s actually an electromagnetic coil that pulls or releases the pivoting contact point, right? I’m sure has resistance, but it’s not a resistor in typical electronics terms. Great vid though!
Man you break it down so well. Thank you.. okay but check this out I got high on PCP and took a hammer to my ignition fuct off everything my ignition signal sticks, basically smashed out everything from the steering wheel to the tilt lever. I'm left with a bare steering column a wiring harness for my ignition switch with one red wire in a cluster of wires what's a clip. Thankfully the clip is intact and I believe that's to my ignition switch. But I got to get the hell out of here so how do I start my car. I can send you a picture that's what I'm dealing with if it makes it easier for you to help me with s*** please help😮
The markings between 85 and 86 is a coil (curvy lines) not a resistor (zig zag lines). The coil is an electro magnet. Otherwise great video. Love your channel!
@@m101ist to help protect the ecm if the signal is used to activate the relay. I was used to it being a 12VDC signal when its wired for ignition switch activation. Now majority signals from the ecm
Absolutely appreciate your explanation and hard work. I have a question that no one has been able to answer for me. I have a 20A fuel pump fuse that blows as soon as I hit my push/start button of which obviously doesn't allow me to start my car. I replace the fuse and as long as I don't try to start my car it doesn't blow, giving me the chance to check my plugs that go to my fuel pump module and the actual plug for my fuel pump under my back seat. I have power running to both plugs, continuity is fine and my fuse is still good so where is the fault at in this situation thanks in advance?
Helpful but you did not include anything on the last relay type the thin rectangular one. The one I needed that has no numbers marked next to the pins. So I cannot figure out how to check.Any suggestions on what kind of video might have that. What type of relay should I search for? Again helpful but never got to the last one. Shown but not mentioned or discussed so I am clueless on how to fix. If you can please advise. Thank you.
I am testing a 1733 5 prong relay. I measured the 85 tp 86 and it measured 74. In the video you said it should be 75 to 100. DOes that mean my relay is bad? My other test showed OL. I did not test with power since I did not have a power source handy. Thank you
Thanks for the help i have been trying to find out how to test my fuel pump relay on my 94 Chevy c1500 2wd 5.7L. i had a check engine code 54 to pop up and when I looked it up there was two different things that could be causing this code one was the fuel pump relay ( low voltage) or it could be a he EGR valve solenoid. Hopefully i can find out how to test the EGR valve solenoid hopefully it is something simple. But knowing my luck ( I ain't even going to say it, don't want to jinx myself ) but again I want to say thanks for your help)
Hmm. I've got relays that don't have 87. It has 87A, but not 87. I'm figuring out that this relay is on all the time, but when the control side is activated, it turns off. It is a 4 pin relay. The part # is FOOCLE FLS820-012-1B. There are absolutely zero that show up on a google search. The 1A & 1C show up, but not the 1B. Ironically, the others are 5 pin. On the front of the relay, there is a white tag that says: Red 12V DC White Relay control Yellow Pump A Blue Pump B I'm trying to use this relay to control a coil to a plug, for a Plasma spark ignition demonstration. I'm using a 12V DC LED strobe light controller to energize the relay, to simulate breaker points to fire a spark plug. This one is a head scratcher.
Can we not use the no 30 when using it for auxiliary light just to supply only the no. 87? Like I'm connecting the 85 to ignition switch and 86 is in the negative? And let the no 30 and 87a alone.
I have a 97 Camry fan 4 pin relay Bosch. Has no 87 but listed as 87a? It seems to be working when tested with a multi-meter and 12 volt source but my relay testers is saying its bad.
I tried to verify my headlight motorcycle relay everything was good until i tried to power it with a 12v parkside battery, when i touched the terminals with the wires it shorted… was the relay bad or did i do something wrong I put a wire to 86 on relay and - on battery and another wire on 85 relay and + battery
Nice video. Nissan horn not working. Good fuses and 12v on one blade plug. I tapped on horn relay and got it to work for a split second. Then nothing. Then the horn worked shortly thereafter for 1 night. I've got a 3-blade Nissan horn relay. I can energize two blades and it clicks, but only in one direction. When I energize the two blades with a good 9v battery I measure about 4v on the output blade that goes to the horn. The 4v steadily decreases if I hold it on the 3rd blade and monitor it. How do I confirm the relay is the issue? Thanks!
I have this 5-pin relay that operates the electric chute deflector up and down on my Kubota snow blower. It is located under the hood but for some reason I keep getting water in the relay case and shorting the relay and causing parasitic drain on the battery. Any suggestions on how to eliminate the moisture in the relay case? It has me baffled because this is the only relay that has this problem. TIA
Finally someone who explains in detail how relays work and how to test them. Thanks a lot, appreciate it!
I'm glad I ran across your video. I tried watching other videos and reading how-tos. None of them made sense to me as they weren't explaining how the relay works. They were only showing how to test with whatever relay they had on hand. It didn't help at all. After your video, I can test my relays in seconds and now that's I know how they work I'll never forget this how.
My thoughts exactly! Have played with automotive electrical for decades and never understood relays. Not anymore.
Ive been wrenching for 10yrs and been avoiding electrical testing. Time to take it head on as I'm doing lots of repairs as a side job for extra income. Once i master my diagnosis skills my price is going up!
Let's call it a 'consultation'.
Relays and solenoids are considered high current switches a lot of people are unaware of this. Yes the control side 85/86 is switched by the computer most times in an automotive application. Great video and I love that meter.
You can even use a flat 9 volt battery and perform the tests. It worked for me. Excellent video man👍
This was a great and simple explanation of how relays works and how to troubleshoot if the relay is good. Thanks. Keep it up.
Thanks. You explained the 87a which the other videos didn't make as clear. I ordered a repair manual. I hope the wiring diagrams are helpful. Getting prepped so when my starter doesn't turn over next time I can see if bypassing the relay will work and start to narrow down my problem.
So glad i found this video. I finally understand how relays work. Thank you
Watch half a dozen of these, and yours is the one that worked for me. Thank you.
This actually sense to me now. I still have questions and some confusion as to why a relay works for a short period then stops. However I now can begin going back through my system
The best and most complete explanation I've seen. Thank you.
Great stuff man.. Thx!! I am sitting here at my desk with my fluke and power supply feeling like an absolute Genius thanks to you..
I didn't have a 12-volt battery so I used a 12v battery tender for power. It performed both tests perfectly without worrying about damaging the relays.
Great video, I always knew what a relay did just didn’t know how it did it Thanks for talking in layman’s terms.
This video goes straight into favourites,
thanks Tim, and take care.
That’s great to hear. Thanks for watching
Best relay testing video on the internet!❤ Thanks for sharing this.
Wow, thank you! That's why we do it. Thanks for watching.
This was really cool - I would love to see more about this. Specifically how you walk through a real problem when it's not some major component like a relay or a fuse.
I'm dealing with a fuel pump that's not working. Motorcycle sat for 8 years with fuel in the tank so I knew I needed to replace it. Since I was already in the tank, I replaced everything previously in the tank....the fuel pump, pressure regulator, fuel filter, float sending unit, all fuel hoses, wiring harness. Now the problem is when I turn on the ignition, the pump still doesn't sound. I added 2 gal of gas and still nothing. I even made a long hook so I could manually change the float sending unit and the level on the fuel gauge didn't change.
SO I'm thinking it's not getting any power to the pump. Fuses were fine - I checked the continuity and they're great. Changed both relays cuz they're old and cheap....still nothing. NOW I'm going to have to test the voltage at the relay and walk it forward but I don't know exactly how to do that. I'm also thinking I should check the plug on the outside of the tank that delivers power inside the tank. However I tried doing that but I'm honestly not sure if what I'm seeing is what it should be. It's confusing when you've never done this stuff.
This is just superb. Well explained nothing unnecessary and to the point. Thanks.
Diagnostic question maybe answered from this video. I had clicking lights in the interior and windshield wipers. They drained my battery. I am going to try this now! Thanks for the great video. Easy to understand
Thanks for sharing, it's helping get out of the rabbit hole.
I had a little understanding of relays, when I tried to add fog/driving lights on my '72 Toyota Corolla & a little background in electronics. However, I never completely understood what the numbers stood for & exactly which terminals did what, even though I successfully wired the lights. Now, as an old guy, you helped really understand. Thanks!!!
I'm in the exact same situation. Took electronic classes in HS and learned more in the army. Being in my late 50s, I am finally a pro with relays. Lol.
Appreciate the video. This is what I struggle with at school. I understand it now.
Loved this video show something how easy it is to test relay before replacing in a wrong way
My only quibble is that it's not a resistor between 85 and 86, it's a coil that, when energized, creates the magnetic field to pull the relay switch to close the 87 and 30 contacts.
I been wanting to learn the process and this was an excellent video. Thanks!
thanks a lot...and the key is infrequently review and/or practice this application in order to retain it... peace
Sir, YOU make this video easy to watch. your teaching mannerisms are most helpful. thank you for breaking it down to my level. great stuff. I subbed based on this video.
Very nice presentation with model straight to the point an extremely easy to understand thank you so much.
Excellent Video, great explanation of Relay functions. Love the test board and your Stainless Table to write on . Great Camera angle also 🙏God Bless You.
Thank you. That was a very good demonstration of those types of relays.
Great video guys. I learned alot and got more understanding on the subject. Thanks Much
Super helpful ! Extraordinary detail !! I learned lots !!! Thanks mate !!!!
Great job letting us know about them explanation went a long ways
Thanks a lot
Best explanation ever . Thanks a lot
thank you for your video it been a big help
Best video on relays I have seen yet. ❤l
Can I just use a spare 12 volt mower battery with some alligator clip wires to energize the relay while testing? Do I risk damaging relay? GREAT video and explanation
very good demonstration, made me understand, great guy!
Love this explanation ❤️💯
Very clear
thanks so much for valuable information my car can now start, it was showing all those symptoms
Great video! Smart and thorough! 5 star rating and thumbs up!
This works sometimes: bang on relay. I had a horn relay that would not work. So I disconnected battery. Tugged, poked, whacked and shook relay. Would not come out. Read it had to be replaced with whole relay tray, or cut out. Hooked up battery to call it a night and presto it worked. I guess it was just stuck with a little corrosion. If does it again I'll drill 3 tiny holes in the top and spray silicone spray into relay to possibly fix corrosion issue for long time.
I GET IT !
B/C If your relay is good there might be a problem somewhere else !!!? THANK YOU !!
Thenk you for the video is helpful God bless you.
Nice! For us who enjoy mechanics but not so much electronic
Thanks for this video, with your help I think I just found the reason for my car not starting. 🎉
Great to hear! That's why we do it. Thanks for sharing.
Question my battery cable end keeps coming loose alternator changed funs fine for a month then bam everything dies battery was 13 when started alternator shows 15 amps im getting so upset paying all these people to fix my car the battery end is not the normal ends that most vars have please help 2011 3.6 chevy Malibu ltz any help please
AWESOME VIDEO!👍🏽🇺🇲 AND THE MOST HELPFUL IN EXCELLENT DETAILS! 👌🏽🇲🇽 YOU EVEN BOTHER TO GIVE US ADVICE AND LINKS ABOUT MULTIMETER THANKS A LOT MAN!
🇲🇽🤜🏽💥🤛🏼🇺🇲
Awesome video! Amazing how such a simple thing doesnt have such easy to understand videos such as yours👍👍
85 & 86 is the coil. That operates the relay.
One of them has to be grounded for it to work eather as a power source or a ground source
Very thorough! Thanks so much!
Good Testing！ Very helpful for me
Go to test power across 85/86 and pop, smoke, awesome!!! Going to guess that's complete junk now. Thanks👍🏻
Great video on electrical relays
Very thorough, Great video. What does it mean when the 87a across 30 open and giving numbers jumping up to 6.7? Does this mean that it’s a bad relay?
Great video, informative on to work with relays.
Great Video 😊. Im checking a random no start with a single click in a old 96 Toyota Camry. Can a relay switch sometimes work and sometimes not? Any information would be greatly appreciated. Thank you.
This was a great video. Thank you.
I’m wondering…can you then reverse and remove a component from this? If it’s a 5 prong feeding a faulty antitheft system preventing a vehicle from starting, can we eliminate the system and put a four prong to bypass?
Excellent video. You are a great teacher.
Glad it was helpful!
Outstanding, well done!
Excellent, excellent video.
Thanks Buddy that's helped me a lot 👍
Because of the way you explained how to test a 4 pin and5 pin
relay, I believe that I will be able to test a few relays on my
1999 GMC Sierra truck. I noticed that you used a 12 volt
battery with two short wires plugged into it. Where can I get
a battery and the two short wire pieces from? I see that I can get
the set of wire leads with the alligator ends attached from amazon.
😮🎉😮🎉😮🎉---😊,
WOW! Thank you so much for taking the time to make this video too inform me about the routes electricity takes when ground/12 volt / 85/87A/420/69 etc .. ..... .. .
My experiments haven't been as fulfilling as I know they were many moons ago. Installing these relay switches inside of the cranium of two species of saltwater fish. I could not get the wiring correct from the electrical brain diodes running to the tail then to the relay fuse and of course it grounded to a hollow bone in the jaw. Then wired to the fins, and from the fins to the 12 volt battery installed exterior of the scales. I couldn't tell you how many salmon I use for practice and I had very neat effects/ movements on command, forward left right and even reverse. It isn't a very good backup job reversing for the fish but it tries even though it doesn't know what it's doing. sounds out of the voice box ( fish don't have specialized vocal cords or larynx's so the most popular way is through a tribulation, the same way crickets makes sounds the fish rubs two phones together or clicks producing audible 112 decibels mimicking music or songs that are being played through underwater sonar speakers. And of course all the tones are in the range of the eardrum that the earthworm grows naturally.. But everybody knows that. (The unnatural eardrums have never worked going back to 19 63 when Klaus Schmidt revolutionized the hearing aid affects/quality for the endangered scouts that were trapped inside of the cave during the mining accident in Mexico. I digress
🤔 I lost my concentration where was I.....
Oh yeah! So I got the huge fish wired up with the relay on the interior of the cranium with the 12 volt battery that is securely placed on the dorsal fin. With no holes or anything drilled into the fish because the last thing I would want to hurt would be the beautiful beautiful experimental fish.
If anybody would be interested in the conclusion of the first round after this kind TH-camr gentleman taught us all about relays, I'm happy too provide my link to the science paper that is peer-reviewed by my peers at the institute.
Between 85 & 86 you refer to it as a resistor. It’s actually an electromagnetic coil that pulls or releases the pivoting contact point, right? I’m sure has resistance, but it’s not a resistor in typical electronics terms. Great vid though!
Excellent informative video thanks. Excellent info and great explanation!!! Thank you!.
Great video!!! Very informive!!
Nice vid!
Thank you very much.
Great video. Thank you
Pity the link to Amazon for the multi-meter says unavailable. A very good video explaining relays.
Wow... Thank you! Amazing video
Great information 😊
Thank you
thanks so much, that was valuable information
Man you break it down so well. Thank you.. okay but check this out I got high on PCP and took a hammer to my ignition fuct off everything my ignition signal sticks, basically smashed out everything from the steering wheel to the tilt lever. I'm left with a bare steering column a wiring harness for my ignition switch with one red wire in a cluster of wires what's a clip. Thankfully the clip is intact and I believe that's to my ignition switch. But I got to get the hell out of here so how do I start my car. I can send you a picture that's what I'm dealing with if it makes it easier for you to help me with s*** please help😮
Thanks for de info 👍🏻grts from Belgium
The markings between 85 and 86 is a coil (curvy lines) not a resistor (zig zag lines). The coil is an electro magnet. Otherwise great video. Love your channel!
There's also a resistor inserted across the coil to damper down the induced voltage created when the relay coil is switched on and off.
@@m101ist to help protect the ecm if the signal is used to activate the relay. I was used to it being a 12VDC signal when its wired for ignition switch activation. Now majority signals from the ecm
Yes,85-86 is a coil that pulls the load contacts to energize a fan motor or whatever but it goes to the device to put under load .
😊@@imfloridano5448
@@m101ist❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤ì❤i
U saved me today like thank u
Absolutely appreciate your explanation and hard work. I have a question that no one has been able to answer for me. I have a 20A fuel pump fuse that blows as soon as I hit my push/start button of which obviously doesn't allow me to start my car. I replace the fuse and as long as I don't try to start my car it doesn't blow, giving me the chance to check my plugs that go to my fuel pump module and the actual plug for my fuel pump under my back seat. I have power running to both plugs, continuity is fine and my fuse is still good so where is the fault at in this situation thanks in advance?
Starter short?
Filter is clogged. Pump should be pulling 10 amp max
Great video! May I get to know the model of your multimeter?
Helpful but you did not include anything on the last relay type the thin rectangular one. The one I needed that has no numbers marked next to the pins. So I cannot figure out how to check.Any suggestions on what kind of video might have that. What type of relay should I search for? Again helpful but never got to the last one. Shown but not mentioned or discussed so I am clueless on how to fix. If you can please advise. Thank you.
He said if the prongs line up its 85 and 86 the other prongs are the 85 and 30 the 85 86 are the low side the 85 and 30 are the load side.
Stumbled upon your channel. Very cool episode, learned something I’ve always wanted to know about. Thanks a bunch! Subscribed!!
Helpful, thanks for that vedio
I am testing a 1733 5 prong relay. I measured the 85 tp 86 and it measured 74. In the video you said it should be 75 to 100. DOes that mean my relay is bad? My other test showed OL. I did not test with power since I did not have a power source handy. Thank you
Excellent informative video thanks
Super helpful ! Thanks..
Excellent info and great explanation!!! Thank you!
Great job 👍
so useful!!
Thanks for the help i have been trying to find out how to test my fuel pump relay on my 94 Chevy c1500 2wd 5.7L. i had a check engine code 54 to pop up and when I looked it up there was two different things that could be causing this code one was the fuel pump relay ( low voltage) or it could be a he EGR valve solenoid. Hopefully i can find out how to test the EGR valve solenoid hopefully it is something simple. But knowing my luck ( I ain't even going to say it, don't want to jinx myself ) but again I want to say thanks for your help)
If relay are melted together I should conduit on ohm meter? Right?
Great video
Hmm. I've got relays that don't have 87. It has 87A, but not 87. I'm figuring out that this relay is on all the time, but when the control side is activated, it turns off. It is a 4 pin relay.
The part # is FOOCLE FLS820-012-1B. There are absolutely zero that show up on a google search. The 1A & 1C show up, but not the 1B. Ironically, the others are 5 pin.
On the front of the relay, there is a white tag that says:
Red 12V DC
White Relay control
Yellow Pump A
Blue Pump B
I'm trying to use this relay to control a coil to a plug, for a Plasma spark ignition demonstration.
I'm using a 12V DC LED strobe light controller to energize the relay, to simulate breaker points to fire a spark plug.
This one is a head scratcher.
is the wiring the same if the 5 pin relay has a built in flyback diode?
Can we not use the no 30 when using it for auxiliary light just to supply only the no. 87? Like I'm connecting the 85 to ignition switch and 86 is in the negative? And let the no 30 and 87a alone.
Well explained..
Wait, if that milwaukee battery is 12volts, can it be used to power up a vehicle?
I have a 97 Camry fan 4 pin relay Bosch. Has no 87 but listed as 87a? It seems to be working when tested with a multi-meter and 12 volt source but my relay testers is saying its bad.
Yeah man great video
Thank you a great video
I tried to verify my headlight motorcycle relay everything was good until i tried to power it with a 12v parkside battery, when i touched the terminals with the wires it shorted… was the relay bad or did i do something wrong
I put a wire to 86 on relay and - on battery and another wire on 85 relay and + battery
Nice video. Nissan horn not working. Good fuses and 12v on one blade plug. I tapped on horn relay and got it to work for a split second. Then nothing. Then the horn worked shortly thereafter for 1 night.
I've got a 3-blade Nissan horn relay. I can energize two blades and it clicks, but only in one direction. When I energize the two blades with a good 9v battery I measure about 4v on the output blade that goes to the horn. The 4v steadily decreases if I hold it on the 3rd blade and monitor it.
How do I confirm the relay is the issue? Thanks!
I have this 5-pin relay that operates the electric chute deflector up and down on my Kubota snow blower. It is located under the hood but for some reason I keep getting water in the relay case and shorting the relay and causing parasitic drain on the battery. Any suggestions on how to eliminate the moisture in the relay case? It has me baffled because this is the only relay that has this problem. TIA
A relay acts as a switch. A fuse limits the amperage to a circuit. A relay controls a high amp circuit with a low amp control circuit.