Quote:
Originally Posted by Accelo
You question is clear as are the schematics. Must have taken you some time to post this. Great job BTW.
The Trinary Switch only grounds the relay so it can start one fan. This isn't really needed at all. You could use the Trinary switch to ground the Fan trigger #2 and it will bring in the high speed relay. I recommend running both fans when the Air is running. It will help keep the refrigerant pressures lower.
I am using the same three relay set up for my fans. Works great with both fans running half speed till the other relay closed then it's full speed/voltage for both fans.
Cheers
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Thank you for replying! So basically I’m going to bring my wire off the trinary switch to the blue trigger wire off the PCM correct? This diagram shows it on the green wire for low speed fans, but it’s the same concept?
Did you have to wire in a diode on the PCM side to keep from throwing a CEL? Seems to be hit or miss from all my research. I was going to start without a diode and see what happens.