What fuses power the headlights on this Expedition/Navigator diagram?

Fuse 16 (20A) feeds the high beams via LT GRN/BLK, Fuse 28 (10A) feeds the left low beam via DK BLU/WHT, and Fuse 26 (10A) feeds the right low beam via DK GRN/ORG, all in the Central Junction Box.

Which fuse feeds the fog lamp switch?

Fuse 27, a 5A fuse in the Central Junction Box, feeds the fog lamp switch through a WHT/BLK wire to pin 2 of connector C246 at the main light switch.

Where is the fog lamp relay located and what are its wire colors?

The fog lamp relay is in the Battery Junction Box. Pin 2 is YEL (coil signal), pin 3 is ORG/LT GRN (power feed), pin 1 is BLK to ground G104 via splice S152, and pin 5 outputs TAN/ORG to both fog lamps via splice S147.

What wire feeds the hi-beam indicator in the instrument cluster?

A GRY/WHT wire enters pin 12 of connector C238 to the hi-beam indicator, which grounds through pin 1 of C238 via a BLK wire to splice S204 and ground G200.

How do the headlamp and fog lamp grounds differ between Expedition and Navigator?

The right headlamp and fog lamp grounds join at splice S104 on the Expedition or S103 on the Navigator, then go to ground G103.

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2002 Ford Expedition/Navigator Headlight & Fog Lamp Wiring Diagram (Bottom)

Ford Expedition/Navigator headlamp and fog lamp wiring schematic with fuse box callouts

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Headlamp and fog lamp wiring schematic (Ford Expedition/Navigator) showing headlamp relay, central junction fuse box (20A fuses), fog lamp relay and switch, hi/lo beam circuits and grounds.

AI caption July 2014 · Photo 2099 of 3001

This is the bottom portion of a headlamp and fog lamp wiring diagram, applicable to the Ford Expedition and Lincoln Navigator (both are explicitly named at splice S104/S103). It shows power distribution from the Central Junction Box through Fuse 16 (20A, LT GRN/BLK, high beams), Fuse 28 (10A, DK BLU/WHT, left low beam), Fuse 26 (10A, DK GRN/ORG, right low beam), and Fuse 27 (5A, WHT/BLK, fog lamp switch feed). The headlamp relay resides in the RPO relay box (pins with DK BLU/ORG and RED/YEL wires). The fog lamp circuit runs from Fuse 27 through the fog lamp switch and fog-on indicator in the main light switch (connector C246), energizing the fog lamp relay in the battery junction box (YEL coil, ORG/LT GRN feed, TAN/ORG output at pin 5) to feed the left and right fog lamps via splice S147. The hi-beam indicator in the instrument cluster is fed by GRY/WHT via connector C238. Grounds are shown at G103, G104, and G200 through splices S103/S104 (Expedition/Navigator), S106, S152, and S204. Drawing reference number 152872 appears at the bottom.

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Frequently asked questions

What fuses power the headlights on this Expedition/Navigator diagram?: Fuse 16 (20A) feeds the high beams via LT GRN/BLK, Fuse 28 (10A) feeds the left low beam via DK BLU/WHT, and Fuse 26 (10A) feeds the right low beam via DK GRN/ORG, all in the Central Junction Box.
Which fuse feeds the fog lamp switch?: Fuse 27, a 5A fuse in the Central Junction Box, feeds the fog lamp switch through a WHT/BLK wire to pin 2 of connector C246 at the main light switch.
Where is the fog lamp relay located and what are its wire colors?: The fog lamp relay is in the Battery Junction Box. Pin 2 is YEL (coil signal), pin 3 is ORG/LT GRN (power feed), pin 1 is BLK to ground G104 via splice S152, and pin 5 outputs TAN/ORG to both fog lamps via splice S147.
What wire feeds the hi-beam indicator in the instrument cluster?: A GRY/WHT wire enters pin 12 of connector C238 to the hi-beam indicator, which grounds through pin 1 of C238 via a BLK wire to splice S204 and ground G200.
How do the headlamp and fog lamp grounds differ between Expedition and Navigator?: The right headlamp and fog lamp grounds join at splice S104 on the Expedition or S103 on the Navigator, then go to ground G103.