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I disconnected the battery up at the "jumper remote" positive terminal but not completely at the battery itself. No Im not familiar with bezel removal, is there a trick? Thanks

I had a stereo go crazy, so had to learn. You can pop the whole bezel around the stereo/temp control by working a small flat screw driver behind it gently and popping it out. It is a snap fit, that slides in. That will expose the temp control mounting screws. Good luck with it!