Wiring diagram for 1967 Plymouth AM/FM radio

Is the yellow wire really orange? The orange wire is for dash lights.

You can connect speakers up a few different ways.

1. You can connect both speakers together to the black and green. It doesn’t matter how you hook up the positive and negative on the speakers, just do them the same.
2. You can hook up a fader so you can adjust the sound from front to back. There are a lot of fader diagrams on the web.
3. You can hook up a power amp to the output of the radio and get a lot more sound. Wire the two inputs of the amp together. together. I believe the old radios had a ground on one of the speaker wires, probably the black wire. If this is so, you will need a power amp that works with a grounded radio output.