its more than just the dome....its all the interior intrument lights...dome can turn off. its also the tail lights and the side markers in the front....
you know how you turn your head lights on? the click right before turning the head lights on. just like that. headlights are still off but the side markers and tail lights and interior lights are on.....i hope its not some wiring near the steering wheel. but it could be because it's horn related.