[BlackbirdSport]

trying to convert to an aftermarket fan on my 96 sport, it takes up less room. Trouble is, the fans got 2 wires, the bird has 3 on the harness. Theres a power and a ground, whats the 3rd wire for? What would happen if I just hooked up the power and ground?
Thanks
Eric

 

[ruffledfeathers]

ac

The third wire is for the ac.
when you turn on the ac the fan speeds up (if its running)
or comes on. I ran one puller fan on the normal power wire,
and a pusher fan off the other wire.
My car got a little warm untill I atached the puller fan to the original
fan schroud. the fan schroud creates a vaccum when the fan is on.

 

[BR1]

ya, and i think the orange is the temp sensored one, and the blue is the A/C one. i hooked up a thermal switch to my fan. its pretty heavy gauge wire on that too.