robertfrank

iTrader: (27)

Hey guys, I recently got a 91 L98 Z28 and it has the dual fan set up. I'm quite partial to being able to turn my fans on when I feel like it so I wired in a manual switch for the fans. I've done this before with my 88 TBI car with great success but I'm having an issue this time around. When I turn on the switch it only turns on the passenger side fan. I've searched and I haven't found a definitive answer on how to get them both to turn on at the same time. I don't mind running a secondary fan switch so I can control each fan at will. So how do I wire it in? any help would be awesome.

eseibel67

Both fan relays have a green wire with a white stripe. Tap into both of those with the same wire and connect it to the switch. Connect the other pin on the switch to ground. That's it.

robertfrank

iTrader: (27)

the weird part about that is only ONE relay has the green and white stripe. the other doesn't have one so i don't know what wire to tap into.

nghanie

i had the same problem 2 days ago. i fixed mine by checking the wires coming directly out of the motor of the fan. there was a melted/corroted splice in the wires. a good way to test your fans is to stick a paperclip in the last two pins in the upper right part of your diagnostic connector. i cant remember the exact letters.