Fan Clutch Wiring Diagram. Nov 09 i replaced serpentine belt and tensioner today when unpluging connector to fan from engine connector wires pulled out on fan side of plug color of wire are diffrent on both side of plugs so i can not. Check for plugged exhaust port on air soleniod valve.
Optional 2nd relay overrides temp switch and turns on fan when ac is turned on fan adjustable fan switchthermostat with radiator probe 12v switching non variable speed only battery 30 amp. I ended up jumping the pcm relay with a paperclip and the is alive again found the fan. If loosened the p clamp must be re tightened to prevent the wiring harness from slipping through the p clamp causing tension on the fan clutch wiring.
Optional 2nd relay overrides temp switch and turns on fan when ac is turned on fan adjustable fan switchthermostat with radiator probe 12v switching non variable speed only battery 30 amp.
Peterbilt 379 fan clutch wiring diagram. Redwhite wire at ac switch microswitch in dash. Engine must be cold thermostat closed. 3 thoughts on chevy c4500 wiring diagram.