OldGuyDIY $7 Car Truck Ignition Fuse Hidden Cut Out Kill Switch Defeat Stop Thieves No Car Stolen
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- เผยแพร่เมื่อ 10 ก.พ. 2025
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As mentioned at 2:26 in the video, I installed an in-line 10 amp fuse.
Hi from the U.K. back in the late seventies a colleague of mine had a Ford cortina MK2 which were really easy to steal, he had it stolen and recovered twice so we fitted a switch in the live circuit to the coil so the car would turn over but not start, one morning he came out to find his car at the bottom of the hill he lived on thieves had broken in to it and tried to bump start it down the hill but it failed to fire up he jumped in the car flicked the switch turned the key and it started right up 👍🏻🇬🇧
Nice.
How about a kill switch, labeled K.Switch, by the ignition switch, except that it triggers a loud siren that runs for a couple of minutes! LMAO
lol
Sounds like it may work.
not labeled ... but semi easy place to find under the dash.
Bro that's brilliant minus the label🤔
Nah ive been on the forums for this, and a guy hooked it up so with the switch engaged, when you go to turn the ignition a buzzer from a scissorlift goes off 🤣 if you’ve been on a construction site, they’re unbelievably annoying and LOUD
I also think the wire should be wired under the fuse box to hide the wire. Use the same type of wires that you normally see under the hood. Your wire looks radically different.
Hide the kill switch, but install an additional fake kill switch in an obvious prominent place. Wire the fake kill switch to activate and lock on loud siren’s inside and outside the car, powered by separate batteries. If the sound volume from the sirens is extremely loud, the criminal will be severely punished by the loud sound and will not be able to stay inside the car, unless the criminal is also deaf, which is very unlikely. The loud sirens will also attract attention to the car. Make sure that you or your passengers never switch the fake kill switch!
I suspect if someone wants to steal the vehicle, it will be a smash and grab. If they are willing to invest the time to raise the hood and do some troubleshooting, they probably know enough about vehicles to successfully steal it whether it has a kill switch or not.
@@OldGuyDIY True, they tied to steal my Kia Soul a few days ago(got rear ended the sam day!) they successfully did everything they had to, but for some reason they didnt get it! i think they failed to realize you have to turn the steering wheel right while starting it to unlock the wheel. i guess i got lucky. going to wire up a kill switch to the fuel pump. in the meantime ive been taking the terminals off the battery to at least make it take a bit longer to get it started...
Good luck.
You forgot the part about tying into the power locks so it locks the criminal in the car with the blaring siren. Lol
Wasn't there a movie Death Car or something like that.
This is a great idea. One improvement You could buy a remote activated relay and add it in. 20 bucks. That would eliminate the switch and make this more convenient . Then there is no switch for them to find. Thieves know about kill switches and might take a minute and find it. The remote is with you.
Thanks for sharing the next step in thief proofing a car. This solution was intended to stop the smash and gab thieves. I believe if a thief has time and wants a vehicle badly enough, he will get it.
Put your wires under the fuse box not on top... Thiefs will easily identify em
AND, the thief will identify those wires and pull them out and replace it with another 10A fuse out of the fuse box. I've hidden my switch and wires!
I would personally use the fuel pump relay fuse, way less obvious that there is a kill switch, no ignition lights kind of gives the game away.
Great vid. There is another cheap fast way. 10$ for a fuse switch. Install in the fuse box in your cabin. Mine is next to left foot. 10 second installation but a little longer to hide and disguise the switch.
Thanks for commenting. I hadn't heard of a fuse switch.
fuse switch is exactly what he created in the video lol
I believe he means a “foot switch” !
Not all vehicles have a cabin fuse box. My jeep dont
I did something simular with my LS1 swapped 1986 Mazda RX7. I put a VATS bypass into the system since I had no body control module. But on the bypass, there was a ground wire. So I put a rocker switch on that ground wire and hid it in the car. I could leave the keys in the ignition, windows open, and no thief was driving that car away! Since mine was hard wired into the harness, you couldn't see it anywhere!👍😁😉
That sounds like a great solution.
I used a button in my car that already exists in the car, that way everything looks original, I put it with a relay in combination with the key, and it has worked for me for years
Till now... 😏
@
It still works. They have tried to steal my car twice and they only damage where the key goes but they don't turn it on. 👌
I like your style sir. Simple easy and straight forward. Thx I'll have to give this a try
Thank you
Did that kill switch years ago on my VW. >You have a single pole double throw switch. I hooked the horn up to the second throw. Center is nothing works; throw 1 car starts, throw two car still doesn’t start but horn goes off. I shared that with my neighbor and for about a week, there were days I’d know when he was trying to start the car ,but forgot to flip the switch from horn to start. Hot to center post!
Thanks for sharing your effective technique.
Thieves are smart too. They’re tricky little bastards and some of them will get into your car and open the hood and see your wiring get up ,not good because he just stole your car and quite easily. Run the wires from under fuse box wiring harness, with the wires hidden to a remote breaker and fuse or a kill switch and put a dummy fuse in along with the rest of the fuses, and it will be less noticeable visually.… Great show… Keep on rockin.
Thank you for the words of wisdom.
I chain/padlock the hood closed on my 2020. @@OldGuyDIY
Thieves don't have time for that. Plus opening the hood is way to conspicuous. I personally would go underneath tho, just to tidy things up.
I really think we need to start getting more aggressive. Like, don’t even bother with immobilizing it, just set it up to where you get a notification when it moves without you, remote activate the door locks and window locks (to keep them in), then, remote activate the taser in the driver seat (make sure you reupholstered that seat with conductive thread at each seam), and watch the show via the dashcam with your loved ones. 👍
Take the unused side of that switch and connect it to the horn..... 😎
Good suggestion. Thank you.
Not bad! It's preferable to put it on the fuel pump. Some thief will simply jump start, but they might think the car is broken if it "starts", but does not ignite
Thank you.
Yeah, my F150 has a relay for the fuel pump, but I found by accident that there is a 15A fuse that controls the fuel injectors. Install a kill switch on that one a the engine will turn over but not start.
@@westhavenor9513dAmn good idea .
Nice video 👍🏽thanks I will try it out, nice simple and straight to the point video.
You are welcome. Thank you for commenting.
Great idea instead of trying to solder wires to the fuse itself. Can I use 10 gauge wire for this.TY
Love it, so simple
My brother got caught by dirty popo with his friend,then they put in the cruiser and another guy drove thier car pushing the gas to the floor, after a night in the station they let them go in the morning, they even stole some money, either way my advice is don't connect it to the gas pump cuz they might kill the battery or burn the starter, thank you and have a nice they!
Thanks for sharing the story.
I had a Ram recently. There was a guy on a forum that made a "plug and play" harness you could put in line with the start button to add a kill switch without cutting the factory wiring in amy way and to the untrained eye it all looked factory. I'm hopeful i can find something similar for my new Silverado. If not I'll do something similar to this. 👍
Sounds like a plan.
Good video. I am thinking about running a on/off switch to the starter wire in the steering column (ignition switch). What do you think?
Switching the power to the ignition switch should work as well as my technique. I was unsure or which wire to interrupt at the ignition switch so I took this route.
So they pop the cover, pull your wires, and put in a fresh 10a fuse from your blower motor.
Yes, if they are willing to put in that much work. This solution was designed to stop your run of the mill Detroit smash and grabber.
@OldGuyDIY i seem a guy actually splice this into below the fuse panel. Splice into the wire. Then its hidden
I have mounted old headlight dimmer(hi/lo), or momentary ON switches in the floorboard of friends cars and wired them to the starter solenoid wire. Vehicle won’t start if solenoid doesn’t engage.
Well me owning a newer Dodge that is known for having theft issues. This is a pretty good solution considering I work in a major city, so thank you. Much appreciated I'm going to wire one of these in when I wire in my LED lights. That way it all looks like LED light wiring
You are welcome. That sounds like a good plan.
Thank you!!! Adding this feature today to my classic!
You are welcome.
It is great idea and much easier for gas model car. Kill switch for gas pump, fuel injector or starter solenoid but any idea which fuse can use for hybrid or plug in hybrid as they don’t have starter
I don't know anything about hybrid vehicles, so I cannot help based on experience. If I were attempting it, I would go to the fuse panel, starting with the lowest amperage fuse, remove the fuse and see if the vehicle starts. Continue testing each fuse until you find one that causes the car not to start. Run a hidden switch to that fuse. Good luck.
They still have an ignition switch/relay
I have a driver side fuse panel that has a 7.5 A , number 8, AM1, fuse for starting system. If I remove this at night and put back in morning, do you think it will kind of do the same?
Probably. I suggest removing the fuse and attempting to start the vehicle. If it does not start, you found a fuse that does the job. If it does start, pick another fuse, perhaps IGN, ignition, and try again. Good luck.
So now your wiring is no longer fuse protected?
I placed a 10 amp fuse in line. Thank you for asking.
I have a 150 lbs Great Dane we call the baby shark. I blacked out the back windows with the darkest tint I could find, and using a reciprocating saw, I installed a drain in the floorboards for what BabyS leaves behind.
The insurance company should cut you a break. That car will never be stolen.
On my chevy 2500 disconnecting the Egn E wont do the job as the van keeps turning ON. Can i do the fuel pump fuse instead? Thank you!!!!
Yes! It's pretty much the same thing, but connecting everything on the fuel pump main relay.
Splice it into the wires that go to the fuse that way you will still have the fuse in line.
I was looking for a quick and dirty solution and installed a 10 amp fuse in line.
@OldGuyDIY ....I understand.
This is a really helpful idea, I wonder if it’ll work with wipers, my wipers don’t shut off when the relay is connected
Yes, it will work with any circuit you install it on. Good luck.
@@OldGuyDIY appreciate it
You are welcome.
You have no fuse for ecm, you won’t have to worry about car stolen if have short or surge and fry your computer. From that fuse trace that wire to the main wiring harness that come behind dash and tap into wire there, hide the switch and wrap with electrical tape to blend it in with rest. Also match that fuse amp with a switch that rating can handle that many amp.
Thank you for the information. I installed a 10 amp fuse in line when I did this job.
I put a 250 V 25 amp switch in my car with the fuse box. It worked at first then the car went off as I was driving and I put a fuse in one of the wires. I put it with the fuse box so what’s wrong?
You eliminated the fuse, you need to fix that.
also, gm sells latching relays. So if you power one terminal it opens, another it closes (two for switch, one ground, open, close, 5 total).
i wired it in to the starter, open to keyless lock, close to unlock (an extra circut on my alarm). So when I lock my car it disables the starter. When I unlock it via the alarm's remote it closes, and the starter function returns.
Thanks for commenting. I have a 10 amp fuse in line. I mentioned it in the video but did not show it.
@OldGuyDIY (hopefully) near the fusebox?
speaker wire insulation isn't durable enough for use in an engine compartment. It must be shielded. Split loom tubing usually works, depending on the temperature.
Thank you.
Brilliant....simple...great
Thank you.
I wouldn’t do any rough wiring on the ignition, you might need reliability… also why not hook it to the starter relay and in the off position have it trigger a cabin siren..
There are lots of circuits a person can choose to interrupt to keep the car from starting. I don't have a siren and came up with this solution based on material I had on hand. I suspect running the switch to the starter relay will also do the job.
Perfect now get a visible steering wheel lock as well. use multiple methods
If the kill switch accidentally gets turned off while the engine is running, will the motor die
Speaker wire? Thats rated for the heat of an engine bay!🤣🤣🤣
It's working great so far.
Great advice, will put most thieves off...
Thank you. I suspect most thieves are opportunists, not problem solvers. I'd rather end up with a broken window and messed up ignition than a stolen car.
Really useful info!
Thanks for commenting. I am glad you liked the video.
Would the car stall if someone was driving and that switch was accidentally turned on?
Yes, I think so.
@@seeharvester No I don't think so, That is only energized when you turn they or press the start button, other than that no power there.
Thanks for the info 😊
You are welcome.
I did that with my 65 Mustang. But I connected it to the cigarette lighter. Push it in car runs. Pull it out it doesn’t n
That sounds like good technique.
you used speaker wire? lol
Yes. Works loud and clear.
Thanks bro...I going to do this
No breaker now if anything goes wrong with the circuit
Is that a problem?
It has an in-line 10 Amp fuse.
@@OldGuyDIY does it matter which wire you use for the inline fuse? Or do I use one on each wire?
@@KartsAndCoffee no, just one side; just made sure its the same amperage as the one taking out .
@@KartsAndCoffee It certainly does matter, because fuses only protect against a short to ground down stream... so the inline fuse needs to located as close as possible to the hot side of the fuse panel socket. A second fuse added further downstream adds zero protection.
The fuse he installed is just connecting a single wire with no ground connection at this level so, no, it does not matter which side of the wire he places the fuse ! Just imagine it is a single wire interrupted by a fuse ! Just the same concept inside the fuse itself, it does not matter if you place the fuse one way or the other it will still work !
Amazing idea
The wiring point is an excellent idea, but the rest won't cut it. Those wires under the hood can be bypassed by the dumbest of thieves. They have to be hidden, and a burnt fuse has to be in that slot.
Nice
Thank you.
News to me that someone would steal an 02 suburban.
Times are hard.
That curcuit needs to have a fuse also
There is a 10 amp fuse in line.
Need to hide the wire a little better...🤔
Thank you.
Dude… at least add a replacement fuse in series with your kill switch. That fuse had a purpose.
There is a 10 amp fuse in line.
You should finish watching the video before you say stuff.
Doesn’t this defeat the entire purpose of that fuse? By breaking the connection between both terminals, you just bypassed the whole concept of the fuse doing its job. Like preventing a house breaker from tripping.
There is an in-line, 10 amp fuse installed in the wire.
@@OldGuyDIY Ah! Ok, thanks.
EXCELLENT! I AM GOING TO DO THAT!
I am sooo full of it, and to prove it: That prevents start. Add another switch to interrupt the alternator power and you can shut down a running engine in case of a runaway situation.
Thank you for taking the time to comment.
I WANT THAT KILL SWITCH!!!!❤❤❤❤❤❤❤❤❤❤❤❤❤😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍
I'm glad you like it.
Good idea, I have done it myself but cut the starter solenoid wire instead, switch in series, but I like your idea less work.
Thank you.
You just removed the safety fuse.
No, there is still an in-line fuse in place.
that's a starting point but were is the fuse ? what is going to protect the current ? so how about a piggy back fuse holder [ lets you put two fuse's in one slot ] that you can Branch off of ! but why stop there do the ignition , the starter and the fuel pump ! six wire in a loom that looks oem not some zip cord from an old lamp ! one switch could do it a sp3t or single pull three pole its like having three single switches in one ! and if it won't crank has no spark and no gas there gone ! just don't brag about it ! or they will still it just to show you !
Why not just find the ignition power wire in the dash and tap that with a switch?
You could do that. I am an old, big guy who doesn't do his best work in small, dark spaces under the dash. The technique I show here doesn't require finding a schematic or using a multi-meter to confirm wire hotness.
i did the same but i put it on the starter fuse
i just watched a video of a company selling a kit to do this for 100 lmao
Sounds good. I bet they sell a lot of them for $100.
If your vehicle is a professional target they will not bother with trying to start it..they'll just back the tilt tray truck up the front and load your car and drive away..
I agree. For drivers of 20 year old Tahoes and Suburbans worth $5-10K like some of my friends and I, I don't expect to be the target of a professional. This mod was intended to stop amateur smash and grab type thieves interested primarily in wheels, stereos and whatever may be in the console.
Or I can just take The Wire out and put it in a Fuse..Or you can push up your fuse box and snip into the wires underneath where they can't see it
Yes, that's true.
Human Hole Punch
I like the video…sure things could be better, but too many critics. The car I i’m going to put this on was stolen in broad daylight by people with masks before the cops could get here there’s no way they were gonna be popping their hood and trying to rewire anything.
I'm sorry to hear about your car theft. Yes, this technique is designed to stop smash and grab thieves; not someone who really wants that specific car.
You now have no fuse in the circuit.
As mentioned in the video and noted in the video description, there is a 10 amp fuse in-line.
Is this a fire hazard?
No, it has a 15 amp in-line fuse.
Ugh. What a hack job. Remember folks, If this guy did any “remodeling” in his house, this is his “standard of excellence.”
Not so much standard of excellence as quick, effective and affordable. Thanks for commenting.
Not very smart...thieves would quickly check fuse box, see your wires... and EXPENSIVE car is gone...
if you have an old/inexpensive car, thieves wouldn't even noticed it
The pictured vehicle is a 20 year old Chevy Suburban.
Thieves usually break a window them use a slide hammer to pull out the ignition switch, cut a couple of wires, twist them together then touch the start wire to the run wire, then drive off. Most thieves know very little about checking under the hood or even opening the fuse box. On the other hand, if they are high end cars and being stolen by professionals, they will like just pull up in a tow truck and drive away with your Ferrari
At least hide the wires!! Maybe inside an existing wire loom.
This solution was intended for a smash and grab guy, unwilling to invest the time to open the hood.
All you need is a tap a fuse and that same setup
I agree. I used supplies I had on hand when I decided to do this job.
What a mess!!!
You need an inline fuse brother, you just bypassed the only fuse for that starter wire
An inline fuse has been installed.
@@OldGuyDIYdoes it matter wich side you wire it into ? I assum it is installed on the wire that’s hot from fuse box
You are effectively putting the switch in line on the hot wire. The ground is run to ground somewhere else. So no, it doesn't matter which side you wire into.
But you deleted the fuse!
No, I have an in-line 10 amp fuse in the wire.
@@OldGuyDIYPutting the original equipment protected by that fuse aside, you would have to locate the fuse as close to the 12v source as possible like in the fuse box area. This protects the new kill switch source wiring from shorting to ground at somewhere like the firewall opening which hopefully has a grommet. I'm sure you got it all figured out, just was not obvious to me and you put together a good video so sure others will reference it.
Hack!
Agreed. Effective hack.
NOW THE CAR HAS NO 10 AMP FUSE TO PROTECT IT/WHY DIDN' YOU USE A INLINE FUSE (10 AMP)
I did install an in line fuse.