Single-Speed Cooling Fan Circuit only allows the fans to run when the engine is running (because it's powered by the fuel pump relay), but gives the driver control for water crossings or in case the temperature switch fails.
For dual 15A fan motors, upgrade the 20A fuse & its wiring to 40A.
A simplified version of this 2-speed 2-fan circuit:
![fancircuita.jpg Single-Speed Cooling Fan Circuit only allows the fans to run when the engine is running (because it's powered by the fuel pump relay), but gives the driver control for water crossings or in case the temperature switch fails.
For dual 15A fan motors, upgrade the 20A fuse & its wiring to 40A.
A simplified version of this 2-speed 2-fan circuit:
[url=http://www.supermotors.net/vehicles/registry/media/575615][img]http://www.supermotors.net/getfile/575615/thumbnail/fancircuit.jpg[/img][/url]](http://www.supermotors.net/getfile/642421/fullsize/fancircuita.jpg)
