Does anyone know what would prevent my radio from turning on after re-installing it? A clock repair dictated removal of the ashtray assembly and the radio. After reinstalling the radio will not power up. Took it back out and successfully bench tested it. Put it back in with the idea that I had a bad ground, no luck. Tried a few different grounding sources, no luck. Confirmed 12v on the power connector to the radio and light, no luck. Any ideas?