[captainclock1988]

Ok here's the schematic, but to be honest when I looked over the schematic, I couldn't find where the AC Adaptor and Battery clip wired into the overall circuit design...

there was 3 wires attached to the AC Adaptor plug-in on the radio, Gray, Black and Brown, the Black wire went to the (+) terminal on the battery clip, the gray wire went to the power switch, and the brown wire went to chassis ground if that helps any.