Time to get electric!
Yea I literally just picked up a taurus 3.8 fan today from a junkyard for 20 bucks. I am pretty excited to get it installed and really clean up the front of the engine. I am going to be using a thermostatic switch you can get from advance auto parts. I had to install one on my daily driver escort because of relays that are discontinued and it works without a problem. The switch wouldn't be enough to handle a dual contour fan setup without upgrading the relay, but I think it should hold up just fine with the single taurus fan. I was going to pull a contour fan setup out but opted for the taurus fan for ease of installation, plus junkyards will charge you double for the dual fan setup.
Hey mustang5l5 can you give me a write up on how to wire up the bosch relay using that controller, just which wire goes to which pin, I've never wired up a relay before. I would greatly appreciate it, I was looking for a temp switch that I could put in the water neck and not have to butcher the radiator.
Well, i have a pdf of the Derale directions if you want them. SN wont let me upload here...too big.
The controller works by switching the ground leg of the fan. Since I used the Bosch 75A relay to power the fan, i ran power from batt, through fuse and to pin 30 on the relay. Then pin 87 went to the hot side of the fan. I grounded the other side to the chassis.
Pin 86 I connected to ACC Hot 12V+...i think i used the low coolant sensor wire. Pin 85 went to the controller since it switches the ground leg. So when controller turns fan on, it grounds the 75A relay and sends power to the fan.
The controller also has a 12V+ manual override wire you either splice a switch into, or hook up to the a/c wiring.
On anywhere from 150-210 degree...with shut off 10 degrees under turn on.
Hey Mike, when you say 85 pin goes to the controller, do you mean the ground wire from the controller? Do you just ground them to the same spot? Or do you just connect them? You would still have to attach those wires to metal correct? I just want to make sure im not confused.
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