Thread: FANS (and AC)
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Old 09-12-2020, 10:19 PM   #15
72MARIO
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Join Date: Nov 2000
Location: Huntsville Ontario Canada
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Re: FANS (and AC)

Just wanted to let you know how I did my fan setup using 1 fan but 2 controls. I used the green ac clutch power wire to control the trigger wire for fan 1 relay . Fan 1 was set on at 80f off at 280. Basically fan 1 is alway on using the pcm ground trigger. I set my fan 2 to come on at 205 off at 195. I just tied both the 10 gauge wires for the fan power together.
Both are set.to turn off at 30 mph. Works perfectly as long as you set fan 1 to be on constant.

I didnt want any more switches and wanted the ac fan off at road speed.
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair
http://67-72chevytrucks.com/vboard/s...d.php?t=625017
1967 C/20 6.0/4L80 Roofing Truck
1990 V2500 Suburban "Plow Truck"
2005 TAHOE DD
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