Hey everyone, I have a carbed 350 swapped 84 firebird with the original radiator/ dual electric fan setup. Both the fans turn on with the ignition being in the "On" position and are on ALL of the time. Basically it uses a lot of my power when trying to start my car dragging the starter making it crank slowly at first. I was wondering if anyone could tell me how to wire two separate switches for each fan with a relay, or even one switch that controls both fans(if thats easier)? So I don't have to have the fans on when I go to start the car. Plus I heard having the fans on all the time can burn the motors out and if you don't have a relay it has a phantom draining effect on your battery... If anyone has done this before I would really appreciate the help. Thank you!

 

Look here.....

https://www.thirdgen.org/forums/cool...iring-kit.html

Been covered numerous times. You can look it up bu using the search function at top of page.

Good luck

 

Thats not quite what I was looking for, thank you though... I want two manual switches. I don't want temp switching or anything like that. Just a simple circuit that will control the function of my fans and not kill my battery.

 

Your factory fan switch works off ground. It grounds the switch, which closes the relay, turning the fan on. All you have to do is cut the dark green/white wire at the relay and run a wire into the car to the switch. Then ground the other side. If you're worried about the fan staying on all the time, you could wire in a relay to prevent that.

 

Maybe you can make sense of this...The black wire on the right connects to the positive side of my ignition coil. The big blue wire connects to my fans and has a ground point towards the front of the vehicle close to the fans. The bright red wire is switched 12V ignition power that I power my gauges with(Also turns on my fans). The dirty red wire connected to my bright red wire goes through the firewall right behind my engine block. I'm sorry I didn't explain it better, I only have the stock radiator and fans. The wiring is much different from stock and looks really stupid and convoluted. From this point how could I do what I want with the wiring to have a switch/relay for the fans. Should I re-wire the whole system?

 

I can't view your picture. There has to be a relay somewhere that is wired to the fans.

 

Usually it's right next to battery on your car, tucked next to radiator....IIRC.

 

Damn, well let me see if I can get a viewable picture on here. I don't see any relay anywhere. My fans are pretty much directly connected to 12v switched power.

 

[IMG][/IMG]

 

Those are the photos I was talking about, whats up with that?

 

those fans are not original to the car-they are '87-92 era,car probably had a clutch fan originally so there will be no factory fan wiring-best would be to use separate fuses and relays for each fan so if something happens to one the other will still be operable(easy to have separate switch for each too) each fan motor will draw around 7 1/2 amp once up to speed,startup current will be higher,possibly around 20 amp-could try a 20 fuse and see if it holds-uprate if it does.

 

Here's an option that you might consider:

https://www.thirdgen.org/forums/cool...electrics.html

JamesC