Where is the turn signal flasher located on a 1979 Ford Bronco/F-Series?

The turn signal flasher is on the "Y" brace, behind the instrument panel. The emergency warning flasher is behind the instrument panel on the LH side.

Where is connector C305 and what does it look like?

Connector C305 is under the instrument panel near the steering column; it is a curved, gray connector with 11 terminals.

What wire colors come from the turn signal switch?

The diagram shows gr/w, y/bk, gr, w/bl, w/r, and bl wires leaving the turn signal switch, with an r/bk feed going to the speed control amplifier.

How does trailer-tow wiring differ for the LH rear stop/turn signal light?

Without trailer-tow, the y/bk circuit runs through C1002 and C1005 to a gr wire at the LH rear stop and turn signal light. With trailer-tow, it routes through C1001 and C1002 to the light, which grounds at G1001, with a y/bk tap through C1102 for the trailer LH turn signal light.

Where is the stoplight switch located?

The stoplight switch is on the brake pedal support, and connector C804 (rectangular, brown, 2 terminals) is also on the brake pedal support.

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1979 Ford Bronco/F100-F350 Turn Signal & Emergency Warning Lights Wiring Diagram

Turn signal and emergency warning lights wiring diagram with connector legend

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Wiring diagram for turn-signal and emergency warning lights with a component-location and connector-description table.

AI caption August 2014 · Photo 20 of 48

This page (page 20) from a Ford wiring diagram manual covers the Turn Signal/Emergency Warning Lights circuit. It shows the turn signal switch and its wiring branches, including a red/black (r/bk) feed to the speed control amplifier (referenced to page 46) with separate routing for vehicles with and without speed control through connectors C305 and C713. Wire color codes from the switch include gr/w, y/bk, gr, w/bl, w/r, and bl. The diagram traces the left-hand side of the circuit: the L.H. turn indicator light (via C208/C208A, splices S100 and S805, ground G701), the L.H. front turn signal light (via C801, splice S807, ground G801), and the L.H. rear stop and turn signal light, shown both without the trailer-tow option (via C306, C1002, C1005) and with trailer-tow (via C1001, C1002, ground G1001), plus taps for camper (C1013, S1001) and trailer (C1102) L.H. turn signal lights. A legend table lists component locations (emergency warning flasher, turn signal flasher, stoplight switch) and detailed connector descriptions with shape, color, and terminal counts for connectors C208 through C1105.

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Frequently asked questions

Where is the turn signal flasher located on a 1979 Ford Bronco/F-Series?: The turn signal flasher is on the "Y" brace, behind the instrument panel. The emergency warning flasher is behind the instrument panel on the LH side.
Where is connector C305 and what does it look like?: Connector C305 is under the instrument panel near the steering column; it is a curved, gray connector with 11 terminals.
What wire colors come from the turn signal switch?: The diagram shows gr/w, y/bk, gr, w/bl, w/r, and bl wires leaving the turn signal switch, with an r/bk feed going to the speed control amplifier.
How does trailer-tow wiring differ for the LH rear stop/turn signal light?: Without trailer-tow, the y/bk circuit runs through C1002 and C1005 to a gr wire at the LH rear stop and turn signal light. With trailer-tow, it routes through C1001 and C1002 to the light, which grounds at G1001, with a y/bk tap through C1102 for the trailer LH turn signal light.
Where is the stoplight switch located?: The stoplight switch is on the brake pedal support, and connector C804 (rectangular, brown, 2 terminals) is also on the brake pedal support.