What wire color feeds the Bronco rear parking, side marker, and license lights?

Brown (br) wires feed all the rear lights in this diagram; black (bk) wires run to the grounds, and a blue (bl) wire goes to the trailer exterior light relay through connector C1208.

Where is connector C1207 located on the Bronco?

Connector C1207 is on the rear crossmember at the LH frame side member; it is a rectangular, yellow, 3-terminal connector.

Where does ground G1001 attach?

Ground G1001 is an eyelet on the "D" pillar reinforcement; the LH rear side marker and LH rear parking lights ground there through splice S1105.

Where does the trailer light circuit branch off?

A blue wire branches from splice S803 (near the license plate light) through connector C1208 to the Trailer Exterior Light Relay, covered on page 18.

What kind of connector is C306?

C306 is a rectangular, green, 6-terminal connector located on the LH fender apron, rear.

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1979 Ford Bronco Rear Lighting Wiring Diagram - Parking, Marker & License Lights

Ford Bronco exterior light wiring diagram with connector and ground locations

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Bronco-only exterior lamp wiring: routes from light switch and dimmer switch through front marker lamps and trailer exterior light relay, with full connector/splice/ground location table.

AI caption August 2014 · Photo 17 of 48

This page (page 17) from a Ford Bronco/F-Series (F100 through F350) wiring reference shows a 'Bronco Only' wiring diagram for the rear exterior lighting circuit. The diagram traces brown (br) feed wires through connectors C306, C1207, and C1204 and splices S1104, S803, S1203 to the LH rear side marker light, LH rear parking light, LH and RH license lights, RH rear parking light, and RH rear side marker light, with black (bk) ground wires through splices S1105 and S1205 to grounds including G1001. A blue (bl) wire branches through connector C1208 to the Trailer Exterior Light Relay (see page 18), and another branch leads to the front marker lights (see page 14). Below the diagram, a comprehensive legend table lists components (light switch, dimmer switch, connectors C208–C1207, splices S801–S1205, grounds G801–G1102), their physical locations on the vehicle (behind instrument panel, fender aprons, frame crossmembers, rear fenders, cowl panels, etc.), and connector descriptions (shape, color, terminal count). This helps a reader locate and identify each connector, splice, and ground point when diagnosing rear lighting or trailer light wiring problems on a Bronco.

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Frequently asked questions

What wire color feeds the Bronco rear parking, side marker, and license lights?: Brown (br) wires feed all the rear lights in this diagram; black (bk) wires run to the grounds, and a blue (bl) wire goes to the trailer exterior light relay through connector C1208.
Where is connector C1207 located on the Bronco?: Connector C1207 is on the rear crossmember at the LH frame side member; it is a rectangular, yellow, 3-terminal connector.
Where does ground G1001 attach?: Ground G1001 is an eyelet on the "D" pillar reinforcement; the LH rear side marker and LH rear parking lights ground there through splice S1105.
Where does the trailer light circuit branch off?: A blue wire branches from splice S803 (near the license plate light) through connector C1208 to the Trailer Exterior Light Relay, covered on page 18.
What kind of connector is C306?: C306 is a rectangular, green, 6-terminal connector located on the LH fender apron, rear.