hi all. have a 03, 4x4, 4dr, 2.5l v6...had a am/fm/cd stereo radio in it. it would not power on. the clock recall did work, as did the backlighting when the lights were on. fuse checked and good. replaced radio with same model (known good) from a 2002. same symptoms. pulled fused and waited 15 seconds...replaced fuse....no change on symptoms. any one out there got any ideas.....what is wrong??? thanks

 

Head light dimmer switch is bad it is the path to ground for all the backlighting.