Computer Cooling Fan Wiring Diagram

The red cable goes to the positive of the power supply vcc and.

Computer cooling fan wiring diagram. You can use almost all standard 3 wire cooling fans with this adapter circuit. The third wire gives your computer a measure of control over that. The connector of a 2 wire fan has a red and a black cable. 2 speed electric cooling fan wiring diagram duration.

However for optimum performance it may become necessary to slightly change the values of components c1 r4 and c2. Most stand alone adjustable thermostats i e. It uses a 40 amp electric relay and electric fan sensor. The red cable goes to the positive of the power supply and the black to the negative.

Hayden flex a lite or perma cool brands can provide a 12 volt output when activated. The cooling fan wiring diagram below is what we ve found to be the simplest and most reliable method. Today s cooling fans are computer controlled and various methods are used to trigger these units into operation. Relays shown in these diagrams can provide options.

Finally note that the connector of a common 2 wire fan has a red and a black cable. Start your wiring project by taking both of the positive wires from the fans and run them to the yellow wires on each relay tab 87. Suggested electric fan wiring diagrams suggested primary cooling fan single speed on off using 12 volt switching devices only for primary activation note.