My front (door panel) speakers are acting-up. They don't work unless I slam the (driver's) door after power is "on". Then, they'll work - for hundreds of miles. If I switch off the power to the radio/CD/casette, I need to re-slam the driver's door to "reactivate" them. I've changed-out the speakers front-to-rear and the problem persists. Also re-checked wire connections and grounding. It's not like a loose wire that comes & goes. It is consistently as I described above. Any suggestions would be appreciated.
jim