"02" with rear speaker problem

I've noticed that everytime it rains or if the humidity is high the right rear door speaker quits working. Given a full day of being dry it will start working again. This happens almost immediatly during high moisture and the vehicle does not have to be driven for it to occure. Anyone have any ideas?

Yip, take off the panel and check for a bad connection.

Tried that, it all seems to work fine except for when it rains. Been working fine all week and this morning when I got in it with it raining outside it doesnt work. I've check the connectors at the speaker when it seems to work fine when its dry. When its wet, checking the connectors makes no difference, it simply wont work. Just when it gets damp outside. Strangest thing I've seen yet. Maybe using an ohm meter on it when its damp to determine if its getting any juice. That might narrow it down a bit.