2004 Ford F-150 XI Fuse Box Diagram

Under the right-hand side of the instrument panel, in the passenger footwell: remove the trim panel, then pull the fuse box cover off by its PULL tab (to refit it, seat the top edge first and push the bottom until it clicks). Positions 1-42 are mini blade fuses, 101-118 are cartridge (JCase) fuses, 401 is a 30 A circuit breaker for the power windows, moonroof, power sliding backlite. Relays: R01 starter, R02 accessory delay, R03 high-beam headlamps, R04 heated backlite, R05 trailer tow battery charge, R06 blower motor (full ISO); R201 trailer tow park lamps, R202 fog lamps, R203 PCM (half ISO).

In the engine compartment on the left-hand fender. The 2004 housing, with the daytime running lamp (DRL) option: one fuse, F01, on the left-hand edge; R01 4x4 counter-clockwise motor relay and R02 4x4 clockwise motor relay (full ISO), R201 DRL relay, R202 A/C clutch relay. R03 is the DRL relay in the upper right-hand socket; the A/C clutch diode D01 plugs in beside the box.

In the engine compartment on the left-hand fender. The 2004 housing, without the daytime running lamp (DRL) option: one fuse, F01, on the left-hand edge; R01 4x4 counter-clockwise motor relay and R02 4x4 clockwise motor relay (full ISO), R201 DRL relay, R202 A/C clutch relay. Without DRL the upper right-hand socket holds the A/C clutch diode D01 instead of a relay.