Electric Fan 90 5.0

Hanksta said:

They said this one is better than stock

Click to expand...

Excuse me while I stop laughing.


I wouldn't put much faith in that fan cooling the car well...especially one that only draws 5A. Really look into an OEM Ford fan swap with a 75A relay and proper wiring methods. Will probably be cheaper than that fan as well.

With either fan, you want to use a relay setup properly sized for the fan's startup amperage. A 5A fan could potentially draw 15-20A for a few seconds on startup.

for a 5A fan, a standard 30A automotive relay at autozone will work fine. You would run a 10g wire from the POS terminal of the starter solenoid to the relay and then to the fan. Then ground the fan with another 10G wire. The relay's activation coil is low volatage, so only 18g wire is needed. Tap into the red wire on the coolant sensor in the front driver's corner of the engine bay. All 5.0 Mustangs will have this sensor wire even if they don't have the sensor. This wire has power when the car is in the ACC or ON position. Tap into the red wire and run to the relay. Now either ground the activation coil of the relay to the chassis...or run the wire to the cabin and install a switch inline and then ground it. Your call.

I;d install a maxi-fuse inline as a standard fuse will blow too quickly. That's why you don't tap into the car's wiring for power and use a relay. For a 5A draw you'd prob want a 10A or 15A maxi-fuse.

That's a basic fan wiring system. If you want to get more complicated and have more control, there are other options.