Yanked the A/C, wiring auxilary fan to a switch?
Thread Starter
Supreme Member
Joined: Jan 2001
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From: www.thirdgentech.com
Car: 2004 GTO
Engine: LS1
Transmission: T-56
Yanked the A/C, wiring auxilary fan to a switch?
I recently yanked the A/C out of my '89 Formula, and was thinking of hooking the auxilary fan to a switch.
After taking out the A/C, is that fan still functional and controlled by the ECM? Will a Hypertech fan switch work? I want to be able to switch this fan on manually.
Thanks!
After taking out the A/C, is that fan still functional and controlled by the ECM? Will a Hypertech fan switch work? I want to be able to switch this fan on manually.
Thanks!
Junior Member
Joined: Aug 2001
Posts: 17
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From: hollywood,md,usa
If your settup is the same as a camaro with daul fans, over around the battery there should be two very large relays. One of these is for each fan. In order to turn them on you will have to determine which wire is the ground which is controlled by the ecm. On my car I believe it was a green wire but I can't remember for sure. Just cut the wire run a wire from the relay to your dash mounted toggle and anothe from the switch to a good ground under the dash.
Supreme Member
Joined: Oct 2000
Posts: 2,264
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Your really Gettin serious about this 12.99 thing now 
Run a wire to the Passenger compartment to ground out ( or power depending on how you like it ) the Secondary fan relay that Richie referres too.
That way you can flip it on whenever you want.
Run a wire to the Passenger compartment to ground out ( or power depending on how you like it ) the Secondary fan relay that Richie referres too.
That way you can flip it on whenever you want.
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