I used a 30 amp relay (supposedly made for off road fog lights) with 12 gauge wiring to power my 2 fans. Used the factory a/c condensor fan positive lead to trigger the relay that turns on the fans. The lead to the battery is protected by a 30 amp fuse.
I had previously done the a/c condensor fan modification to make it run full time. my 2 fans switch on when my car turns on (thus ignition controlled)..
I will try to borrow a camera and take pics when I can.
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