AM-FM Stereo Installation Questions 1969
Short answer: In 1969 (unlike the 1968’s plug-in multiplex), stereo used a separate radio, and the AM/FM Stereo needs its matched external multiplex (MPX) unit to work; the plain AM and AM/FM radios work standalone (power + speaker only).
- All three 1969 Firebird radios had longer pushbuttons (to reach through the angled dash). AM and AM/FM had black buttons; the Stereo had chrome. On AM/FM and Stereo, the left button is molded “AM,” the right “FM.”
- The AM/FM Stereo’s MPX mounts above the glovebox; the 9-pin connector cable is on the radio and plugs into the MPX (opposite the 1968 arrangement).
- The 8-track is self-contained. AM/8-track combos played the AM through the dash speaker and the tape through the four (kick-panel + rear) speakers — with no switch, so both could play at once. Repro harnesses are available for each application.
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Content last modified: June 13, 2026 at 10:06 am
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I have a 69 am/fm stereo radio but it’s missing connectors where it plugs into the wiring harness. Could you send a pic of the connector. I want to see the pin out of the radio to the connector on the radio that goes to the wiring harness. I appreciate the help. Allen
Just to clarify,I’m looking for a picture that shows the connector that is attached to the radio where the harness plugs in to see the pin out/ wire colors. Thanks, Allen