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Wiring Diagram Pc Fan. This is based on the draw from the fans if the fans are larger and draw more than 15 amps each its recommended to install a second relay kit as shown below. On these 4 wire computer fans i have found that some times they require an input to tell it how fast to spin so simply supplying power to 2 of the wires will not work if you have a 3 wire fan however you can supply power to the red and black and leave the white disconnected.
There is no fan control. A wiring diagram is a streamlined standard pictorial depiction of an electrical circuit. Suggested Electric Fan Wiring Diagrams Suggested Primary Cooling Fan - Single Speed ONOFF Using 12 Volt Switching Devices Only for Primary Activation NOTE.
On these 4 wire computer fans i have found that some times they require an input to tell it how fast to spin so simply supplying power to 2 of the wires will not work if you have a 3 wire fan however you can supply power to the red and black and leave the white disconnected.
It shows the elements of the circuit as streamlined shapes and the power and also signal connections in between the devices. Suggested Electric Fan Wiring Diagrams Suggested Primary Cooling Fan - Single Speed ONOFF Using 12 Volt Switching Devices Only for Primary Activation NOTE. This is based on the draw from the fans if the fans are larger and draw more than 15 amps each its recommended to install a second relay kit as shown below. A 4 pin PWM fan connector will have four square holes on the front and four wires entering the back.