your speaker wires to that door are grounding out your deck or amp and that will cause the amp to short out and not play. check where your wires go thru from the door to the body for any shorts .
well... it still plays but it gets loud up to half dial
then it gets super soft after that (kinda dies out to soft)
I dont have any wires in the door or anything (no power w/l/m, speakers in stock dash location)
so I figged it was the door trigger
any thoughts?