What fuse powers the radio in this wiring diagram?

Fuse 12, rated 7.5 Amps, which is hot when the ignition switch is in Run or Accessory (see page 9 of the set).

What wire color feeds power to the AM/FM and CB radios?

The power feed is bk/gr (black/green) into Fuse 12, then y/bk (yellow/black) wiring distributes power to the AM or AM/FM monaural radio, AM/FM stereo radio, CB radio, and CB radio microphone.

Where are the radio speakers located?

For AM, AM/FM, and Radio, the speaker is behind the instrument panel. For AM/FM stereo, speakers are inside the front doors (LH and RH).

Where are connectors C507 through C511 located?

C507 is behind the instrument panel, left of center (rectangular, black, 4 terminals); C508 is at the LH cowl side and C509 at the RH cowl side (both rectangular, red, 2 terminals); C510 is at the lower LH door and C511 at the lower RH door (both rectangular, black, 3 terminals).

What speaker wire colors are used from the AM/FM stereo radio?

Orange (o), white (w), and p wires run from the stereo radio through connectors C507, C508/C509, and C510/C511 to the LH and RH speakers, with black (bk) return/ground wires.

Home/ Registry/ Ford/ Bronco/ 1978-1979/ 1979 Ford Bronco/ Photo supermotors.net/registry/media/1032654

1979 Ford Bronco F100-F350 Radio & CB Wiring Diagram - Fuse 12, Speakers

Ford truck radio and speaker wiring diagram with fuse 12 and CB radio choke

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Radio wiring through fuse 12 (7.5A): AM/AM-FM monaural and AM/FM stereo radio speakers, CB radio choke and microphone, with door/cowl speaker connector locations and connector descriptions.

Part of 1978-1979 Ford Bronco Wiring Diagrams

AI caption August 2014 · Photo 35 of 48

This document is page 35 of a factory-style wiring diagram set uploaded as covering the 1979 Ford Bronco and F100 through F350 trucks. It shows the radio circuit wiring, including the AM or AM/FM monaural radio, AM/FM stereo radio, CB radio, and CB radio suppression choke. Power comes from Fuse 12 (7.5 Amps), hot when the ignition switch is in Run or Accessory (referencing page 9), on a black/green (bk/gr) feed transitioning to yellow/black (y/bk) wiring. The diagram traces the y/bk power distribution through connectors C506, C530, and C531 to the radios and CB, with a branch to the CB radio microphone. Speaker wiring from the AM/FM stereo radio uses orange (o), white (w), and pink/purple (p) wires through connectors C507, C508, C509, C510, and C511 to the LH and RH radio speakers, with black (bk) grounds. A legend table lists component locations: standard radio speakers behind the instrument panel, AM/FM stereo speakers inside the front doors, and connector locations and descriptions (C507 behind instrument panel left of center; C508/C509 at LH/RH cowl sides; C510/C511 at lower LH/RH doors; C514 behind instrument panel near radio speaker) with connector shapes, colors, and terminal counts. Useful for diagnosing radio power and speaker wiring issues.

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Frequently asked questions

What fuse powers the radio in this wiring diagram?: Fuse 12, rated 7.5 Amps, which is hot when the ignition switch is in Run or Accessory (see page 9 of the set).
What wire color feeds power to the AM/FM and CB radios?: The power feed is bk/gr (black/green) into Fuse 12, then y/bk (yellow/black) wiring distributes power to the AM or AM/FM monaural radio, AM/FM stereo radio, CB radio, and CB radio microphone.
Where are the radio speakers located?: For AM, AM/FM, and Radio, the speaker is behind the instrument panel. For AM/FM stereo, speakers are inside the front doors (LH and RH).
Where are connectors C507 through C511 located?: C507 is behind the instrument panel, left of center (rectangular, black, 4 terminals); C508 is at the LH cowl side and C509 at the RH cowl side (both rectangular, red, 2 terminals); C510 is at the lower LH door and C511 at the lower RH door (both rectangular, black, 3 terminals).
What speaker wire colors are used from the AM/FM stereo radio?: Orange (o), white (w), and p wires run from the stereo radio through connectors C507, C508/C509, and C510/C511 to the LH and RH speakers, with black (bk) return/ground wires.