The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 3 Fan Relay + VA

**First c10** · 01-12-2020, 11:19 AM

I have mine setup to kick the high side wire (which will only run 1 fan) so if the motor get above 195 the pcm will initiate the low speed and I will have high speed both fans. I think this is how mine is wired. I never thought about the diodes. I may change mine. No codes so far but haven’t ran it much with the ac on.

01-12-2020, 11:19 AM	#4
First c10 Registered User Join Date: Dec 2012 Location: Los Banos CA Posts: 2,706	Re: 3 Fan Relay + VA - Diagram I have mine setup to kick the high side wire (which will only run 1 fan) so if the motor get above 195 the pcm will initiate the low speed and I will have high speed both fans. I think this is how mine is wired. I never thought about the diodes. I may change mine. No codes so far but haven’t ran it much with the ac on. __________________ 1956 Chevy Bel Air 2 door 1956 Chevy 210 4 Door 1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD 1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E 1968 K10 LWB Dark green my son calls it "THE HULK Jr"HULK JR SOLD GO GO!!!