Thanks Don, I'm sending him this to read. The dash lights do not go out when the brake lights go out. Thanks again.
If the radio and brake/dome lights seem to fail at the same time, it acts like you do not have stock wiring, but an aftermarket harness that has been installed unconventionally.
Another question to help narrow down the problem. Does the brake and dome light work with the key off?
Sent from my 1981 IBM 5150 PC.
I would take a piece of wire and hook it the neg post on the battery and run it to the radio ground..If it fixes the radio problem you have a ground problem. If it dos not it's a power problem. You have many power circuits in a car but only one ground circuit that all the power circuits use. A lot times if you have more than one problem with circuits that are not connected it turns out to be a ground loose,broken or missing.