How to wire an electric fan with an AC trinary switch. UPDATE

NOTE: This video has been edited and re-uploaded due to what was a mislabeled component in the video. Thanks to all that made us aware of the error in the comments section.
A trinary switch will allow your electric fan to turn on and off based on either engine temperature or AC system demand. Keep your engine and yourself cool by wiring a switch into your American Autowire 500479 universal relay kit!

[@MANDIRIGEMILANGART]

fan condensor and fan rad workly alternately. good job

[@noelconroy3647]

Awesome information thanks for sharing thumbs up :-) :-)

[@BourneThisWay]

I have my after market AC system wired up exactly like this diagram, minus the manual and temp switch. I want to add a temp switch now, and I want to use the factory fan wiring that was used prior. The factory fan connector only had two wires: a black/red and solid black wire. I assume the black wire is the grounded to the car’s computer. Could that one black wire be used as a temp switch? I believe that’s only for powering the fan though. There is a temp switch attached to my radiator, however. Could I tap into that temp switch’s ground to achieve my goal?

[@carlosbanegas7577]

THANK YOU

[@robbwhitehead5486]

do yu have to ground ac desperately to the body?

[@TheHelado36]

Does the fan runs faster when A/C is turn on ?

[@vsslr5000]

hi. can u upload a video of a diagram with no fan and a binary switch

[@familygunsandrides....8024]

Is that a 2 speed fan or one speed fan?

[@Sip28]

Where do I get a trinary switch from?

[@user-yf2qs8gu3d]

Hi I have a car X5 model 2004 electric cooling fan keep working even when the car extinguish what is the reason that possible

[@Mr572u]

The engine is still hot. When it cools off the fan will turn off.

[@raoufdz7160]

What about the trinary with three wires

[@mefadon459]

Do the temp switch connect to a ground or power

[@MANDIRIGEMILANGART]

from the switch there is a ground that is connected there is also a plus. in this video on the main ground switch

[@mefadon459]

@@MANDIRIGEMILANGART do you know why the ac would randomly cut off by itself. I have a vintage air setup that uses the same setup as shown except for the manual radiator fan cut on switch. Everything looks fine to the naked eye

[@degar1877]

For dual fans with AC how would one hook this up so one fan cuts on with the ac is turned on ? I seen your video with dual fans but it doesn't show it with AC.

[@ernesternest4007]

Did you figure out how to wire this up?