Hi there, after I did my header and exhaust and disturbing the sensor wires in and around the passenger side of the block (knock sensor problem on a previous theread), on occasion now when I turn ignition forward to accessory my A/c fan unit will come on right away(heater controls off). What wires and where should I look. THX

 

The aux fan sw is located right near the knock sensor. Possibly with the headers the wire is burned and intermittently touching ground. It has a single wire going to it.