hello.i have a 99 silverado w/5.3,ive added electric fans about two years ago.took off manual fan and added the dual spal fan setup,they are controlled by an adjustable temp controller from autozone with a relay thats connected directally to battery(fused)with a switch on dash to run fans whenever i want.
setup works great,no problems other than one improvement i would like to make.i have no a/c controll.i would like fans on at idle or slow speeds(with ac on),i dont want fans on all the time even when im traveling on the highway/roads.air flow through grille at highway speeds is better than /and more efficent than the fans.where/how do i find a trigger for fans(relay) with ac on and go off at highway speeds like an oem setup????ive always used my switch for this,i dont want to forget and blow something in the ac system.
is my computer capable of controlling fans if i add the pin to the computer plug that ive read about newer models if so, which pin/color/location? thanks,Gary.