[Bill Hutchinson]

Scott,

This may or may not be the answer you want to hear, but in the long run it probably doesn't matter much. For the majority of the wiring, I'd suggest 18 gauge wire, probably stranded. But since it's under the chassis and not moving around, solid wire would be OK, but not as easy to work with. Also, it's quite likely that much of the wiring is still in pretty good shape, as this radio predates the use of rubber coated wire. That was the case with mine, and I ended up only replacing a handful of wires. I'm a great believer in not making more work for myself than I have to.

Also, since it's underneath the chassis, it's also another reason why it wouldn't matter a lot what the colors are. But what you might want to do, just as a suggestion, would be use red for B+, black for ground, yellow for filaments, green for audio, and so on.

Again, it's yours, and you can set a standard for what you feel comfortable with. Your mileage may vary.

Chuck might have some specific data regarding this topic. I'm enjoying your updates on the 37-650, which is one of my personal favorites. Keep the updates coming!

Bill