Originally Posted by gmachinz (Post 7828310)

Here's a Motorcraft 2-speed RF24 T-Bird fan mounted stealth style inside a stock pickup fan shroud-it is powered using my 3-speed conversion harness also. This way, the fan motor is converted to 3-speed operation. This type of fan harness allows you to run any style of fan(s) without the worry of high inrush currents or sudden spiking. I've moved away from failure prone PWM controllers and have been using these bullet proof relay resistor fan harnesses for over 6 years now.