Most stand alone adjustable thermostats i e.
Electric radiator cooling fan wiring diagram.
Relays shown in these diagrams can provide options.
Suggested electric fan wiring diagrams suggested primary cooling fan single speed on off using 12 volt switching devices only for primary activation note.
It uses a 40 amp electric relay and electric fan sensor.
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The first part of the installation is to install the electric fan to your radiator and remove the mechanical fan.
Hayden flex a lite or perma cool brands can provide a 12 volt output when activated.
It shows the components of the circuit as simplified shapes and the capability and signal contacts between the devices.
The cooling fan wiring diagram below is what we ve found to be the simplest and most reliable method.