Cooling Fan Circuit 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. 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. Wiring dual cooling fans. Suggested electric fan wiring diagrams suggested primary cooling fan single speed on off using 12 volt switching devices only for primary activation note.
Relays shown in these diagrams can provide options.
With dual cooling fans there are two methods for wiring up the relay kit. In this video i show you how i troubleshoot the cooling fan circuit on an older honda civic. I also show how to replace the cooling fan switch. It uses a 40 amp electric relay and electric fan sensor.
