What fuse powers the radio circuit in this diagram?

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

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

A yellow/black (y/bk) wire from Fuse 12 supplies power; ground wires are black (bk).

Where are the speaker connectors located?

C507 is behind the instrument panel left of center, C508 is on the LH cowl side, C509 on the RH cowl side, C510 on the lower LH door, and C511 on the lower RH door.

Where are the radio speakers located?

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

What type of connector is C507?

Rectangular, black, with 4 terminals, located behind the instrument panel, left of center.

Home/ Registry/ Ford/ Bronco/ 1978-1979/ “Black Betty”/ Photo supermotors.net/registry/media/1105103

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

Ford radio wiring schematic: AM/AM-FM monaural and AM/FM stereo speakers, fuse 12 7.5A, connector list

‹ ›

Radio wiring schematic showing the 7.5A fused feed in RUN/ACCY to AM/AM-FM monaural dash speaker and AM/FM stereo door speakers, with a component connector location table.

AI caption March 2017 · Photo 1637 of 1711

This page (page 35) is a factory-style wiring diagram covering the radio circuits of a 1979 Ford Bronco / F100-through-F350 truck, per the album it belongs to. It shows power fed from Fuse 12 (7.5 Amps), hot when the ignition switch is in Run or Accessory (referencing page 9), via a black/green (bk/gr) wire, then yellow/black (y/bk) wiring through connector C506 to the AM or AM/FM monaural radio, the CB radio (with a CB radio suppression choke and connector C530, plus a lead to the CB radio microphone), and the AM/FM stereo radio via connector C531. Speaker wiring is shown in orange (o), white (w), pink (p), and black (bk) wires routing through connectors C507 (behind instrument panel, left of center), C508 (LH cowl side), C509 (RH cowl side), C510 (lower LH door), and C511 (lower RH door) to the LH and RH radio speakers. A legend table lists component locations and connector descriptions, including C514 (behind instrument panel, near radio speaker; rectangular, black, 2 terminals). Readers can learn fuse rating, wire colors, connector locations, and terminal counts for radio/CB/speaker circuits.

Is this accurate? Sign in to help verify it.

Frequently asked questions

What fuse powers the radio circuit in this diagram?: Fuse 12, rated 7.5 Amps, which is hot when the ignition switch is in Run or Accessory (see page 9).
What wire color feeds the AM/FM stereo and CB radios?: A yellow/black (y/bk) wire from Fuse 12 supplies power; ground wires are black (bk).
Where are the speaker connectors located?: C507 is behind the instrument panel left of center, C508 is on the LH cowl side, C509 on the RH cowl side, C510 on the lower LH door, and C511 on the lower RH door.
Where are the radio speakers located?: The AM, AM/FM, and Radio speaker is behind the instrument panel; the AM/FM stereo speakers are inside the front doors (LH & RH).
What type of connector is C507?: Rectangular, black, with 4 terminals, located behind the instrument panel, left of center.