wipers , radio ,door locks

02 concorde lx front speakers didn't work replaced radio with pioneer used aftermarket plug , now when i have the radio on the doors lock and the wipers will wipe a few times every so often if i faded to the back this dosen't happen if music is loud the keyless will not work, there have been a few times the headlights wouldn't go out had to unlock and lock with keyless for them to go out anyone have an answer for this