1979 Ford Bronco Radio & CB Wiring Diagram - AM/FM, Speakers, Connectors

This is one page of a factory-style Ford wiring diagram covering the radio and audio system circuits. It shows the power feed circuit 137 (yellow with black stripe, "137 Y-BK") branching to several optional radio units: an AM radio receiver, a digital AM radio with clock receiver (with digital display), an AM/FM monaural radio receiver, an AM/FM/MPX (stereo multiplex) radio receiver, and a C.B. receiver/transmitter radio with its suppression choke and microphone connection. Connector numbers are identified throughout, including C-506/C-506A, C-507 through C-512, C-514, and C-530 through C-533. Speaker wiring is detailed with circuits 784 P (purple), 806 W (white), and 807 O (orange), routed through connectors C-508, C-509, C-510, and C-511 to left and right radio receiver speakers, with black (BK) ground returns. Additional circuits 282 GR, 287 BK, and 822 BR route to the C.B. radio relay (part reference 18B821). A partial legend strip at the bottom lists connector face views and part references such as 18B821, 19A123, 19A041, and 18808. A reader can use this page to trace radio power, ground, and speaker wiring by circuit number, wire color, and connector.