Originally Posted by 89Saleen141
I just got my weeks check and am about to order the Mishimoto dual electric fans. I was wondering what the best way to wire them would be? Do you guys wire them straight to the ignition, a switch, or a thermostatic fan controller. Which is the easiest option and which is the best way of wiring them.
Use relays and thermostatic switches.
Never run the power straight through a switch and to a fan.
Always use a relay.
Oversize the relay because the start up amperage load can spike up to 70 amps which will quickly destroy switches and relays that are to small.
If your fan does not have one, use a one way diode on the power connections.
When you cut the power to a fan and it is still rotating it can become a generator and power spike your electrical system. The diode prevents that from happening.