I purchased an LT1/LS1 dual fan setup off of ebay and am trying to wire it up. It has 4 wires coming out of it, they are: 1 white, 1 black, 1 light blue, 1 grey. I am assuming the fans came from an LS1 since my LT1 wiring diagrams show fan wires being a different color. My question is what are these specific wires for? I am guessing that the grey/blue wires control the fans, the black wire is ground, and the white wire is power, but that is just a guess.

My painless harness has 2 wires which are supposed to connect to fan relays and I need to know how to wire the fans up after the relays. Any help is appreciated, you guys are always great!

 

ttt

 

Should be able to ground one wire from each fan plug. Then wire primary fan to the primary relay and secondary to secondary relay. B side goes relays A side is ground.

 

The wiring diagram was helpful, but the wire colors were still not correct, so I purchased a fan installation kit from the auto parts store ($35) which took about a half an hour to install. I don't know if it works yet or not, but the install was pretty straightforward and I will know if it works once I start the car this weekend.