Computer Cooling Fan Wiring Diagram

You don t need it to make the fan turn but the third wire is there for a good reason.

Computer cooling fan wiring diagram.

Most stand alone adjustable thermostats i e. Video of the day. 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. You can use almost all standard 3 wire cooling fans with this adapter circuit.

The cooling fan wiring diagram below is what we ve found to be the simplest and most reliable method. It uses a 40 amp electric relay and electric fan sensor. The third wire varies depending on the manufacturer but usually it is blue or yellow. Relays shown in these diagrams can provide options.

A pc fan s wire colors are pretty consistent with red almost invariably marking the positive and black marking the negative or ground. The red cable goes to the positive of the power supply vcc and. Finally note that the connector of a common 2 wire fan has a red and a black cable. Hayden flex a lite or perma cool brands can provide a 12 volt output when activated.

Suggested electric fan wiring diagrams suggested primary cooling fan single speed on off using 12 volt switching devices only for primary activation note.