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Hi
LQ4 going into a 57 chevy. 2007 hummer donor. AC also.
Single 16" single speed fan.
How should this be wired ? Im assuming
1) Delete FAN 2
2) For FAN cooling of truck Hook up like normal fan control but since there are high/low - then not sure here with single fan single speed.
3) For AC management of compressor/fan - use a trinary switch to ground signal and turn off ?
Im *guessing/thinking* - for wiring/pcm etc I need to .....
1) Enable FAN#1 if not enabled. Disable FAN#2 so only 1 fan.
2) Blue connector #41 -> add a pin to go to fan relay to ground circuit.
-- This will give you electric fan control based on engine temp.
-- But now for AC
3) Add trinary switch to compressor circuit to switch on/off fan based on hi/low pressure signal.
a) Not quite sure if thats right
b) The wiring exactly
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AC single fan 
