Radio help

Being an older radio, mostly these had only the dash speaker to work with. There are standard colors for wiring, but often on a factory unit the colors are different than what the industry uses. Normally, black is power ground, red is power hot from your ignition switch, and the other two are positive and negative for the speaker. A quick solution might be to ask the folks at Wards, since they rebuilt it. If it's still a mystery, take a 12v power source and hook up the negative to one terminal, starting with the black one. Touch the positive to the other three wires one at a time. When you find the right combination, the radio will power on. That means the two other wires go to the speaker. Mono speakers are less critical than stereo for polarity, but it's nice to get it right if possible.

It does appear the bolt on the side of the radio is to help support the weight. The round hole is where your antenna lead plugs in.

I notice in your photo, it appears there is an additional wire (orange?) curling up over the top of the radio. Is this part of the wiring?

If all this is clear as mud, feel free to PM me, I can walk you through it on the phone.

Zach