Car wiring diagrams: F150 Fan Clutch Wiring Diagram, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. Fan Clutch Wiring .L Power Strokesel. and colors for the engine cooling fan. Yep it came loose and the harness got into the fan, oops!.This bundle of wires orriginally went to the stock fan clutch. and am wondering if the wiring harness that used to plug into the fan clutch that is .If you ve ever had a fan clutch pig tail get taken out by the fan then you sure beats hard wiring and or replacing both the engine harness and clutch fan. F Crew Cab Ecoboost stock for now Totaled March.