4 Wire 2 Speed Cooling Fan Wiring Diagram. This is based on the draw from the fans if the fans are larger and draw more than 15 amps each it s recommended to install a second relay kit as shown below. If you choose to operate the fan using both speeds two switching devices or a derale dual fan controller part 16788 or 16789 is recommended.
For this set up we also used two of the speedway universal electric radiator cooling fan part number 910158 which comes in a 10 12 14 or 16 inch diameter. This is based on the draw from the fans if the fans are larger and draw more than 15 amps each it s recommended to install a second relay kit as shown below. With dual cooling fans there are two methods for wiring up the relay kit.
Most stand alone adjustable thermostats i e.
Variety of fasco fan motor wiring diagram. Black wire grey wire brown wire ground low speed. The fan has 4 wires yellow black white red but the power supply has just two wires. Of course all you need is the red and black wire to run your computer fan but if you didn t know what the extra wires are for this video may help you out.
