well from what i was told..........
the door pins wires are -
soo what you want to do is find a + sorce.... keep away from your audio wiringggggggggg.....your get a hummming sound and you'll want to kill yourself
soo connect 1 end to the neg of the door pin switch, andddddd 1 end to the pos.... and when u open the door, it will cause a closed connection (think thats the right term)