while changing a taillight bulb I noticed that the brake light was dim when brake applied. so I cleaned all my connects and checked things out but didn't find anything wrong.that when I started to think of other things I have found strange since my radio was replaced. sometimes when turning off my lights I get A momentary stall but never a complete stall.My question is are there any brake wiring in the harness where the radio is wired???? if so does anyone have A diagram for radio wiring.