I was working on smoothing my stereo bezel for 3 days, but continued driving with the A/C & the push buttons on top disconnected. Noticed that the radio wouldnt come on. I also have a LED that blinks when the ignition power is off (fake alarm). It was blinking. After about 5 min the radio just starting working and the LED stopped blinking. Parked the car and then it would not come on at all. Took out the #18 rear fuse and put it in non-ign controlled fuse slots and the radio works. Put the fuse back in the IGN and for 2 days it works good now. I guess it was some kind of reset that I did.

Here is a pic of the fuse for the cig lighter. In the insert you can see the IGN for telling you how to set it. If you have the smokers group it will be in forward/top slots.