Is it a common problem for the interior lighting (dome and one behind rear view mirror) to stop working on 900's? Door switches both check good, switch checks ok with a continuity meter, fuse is good yet I still don't get any voltage to either socket. Searched the forums a bit but I didn't really find anything pertaining to inside lighting. One mentioned the buzzer but mine works fine. Light in the rear under the speaker works, but I think that's a different circuit altogether although not sure.