I'm in the process of wiring up both fans (rad fan and a/c fan) to a switch and wondering where I can draw power from?? My first thought was the airbag 15a since I dont use it.
Find the pins on your ecu that control the fans. These just pull to ground. You can wire them together so that when one pulls ground, they both turn on.
And then wire a switch to that. One end of the switch will be grounded and one end will connect to your fan wires. Or just wire the fan switch to your a/c fan and let the ecu control the main fan.
You'll still be activating the factory relays and hardly adding any wiring weight.
Find the pins on your ecu that control the fans. These just pull to ground. You can wire them together so that when one pulls ground, they both turn on.
And then wire a switch to that. One end of the switch will be grounded and one end will connect to your fan wires. Or just wire the fan switch to your a/c fan and let the ecu control the main fan.
You'll still be activating the factory relays and hardly adding any wiring weight.
I'm terrible with electricty but...... (on my NB) Positive power can be found in front of the passenger side fire wall, in a small black box. Flip it up, there's a bunch of fuses and relays, and on the righthand side (if you are standing in front of the car) is a positve terminal. I tapped into this for my HIDs. Or you could simply tie into the battery.
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