I was driving home tonight and it was 89* outside, had the air on and at a stop light my shifter would shake really bad as the AC comp kicks in, it would shake, and then settles down then cycle over as the AC kicks on and off. This has not happend before, and another thing is the AC comp also effects my lights in and outside lights would dim a bit, this is very noticable when I stand behind the car and watch the tailights dim undim dim undim. Is this normal or is do I have something to worry about?

 

I've never noticed that happening on my car.

rx8cited

 

I haven't on the 8, but my first two cars did that. If you push the button to roll the windows up and they were already up, my lights would dim pretty bad on my 02 Si.
Do you have any mods like aftermarket grounding wires or sound system ?

 

sounds like a bad alternator

 

No mods, I dont care for modding or such, 238hp is good for me since im not a racer type. Only thing I bought for my 8 is a Noah car cover, it works and has a tight fit. I dont know why my car is doing this, seems I should be going to the shop again. SHUCKKKSS.