The windshield wipers on my 04 Vectra stopped working again. They will run for a long time and then stop if I pull the fuse and reinsert it or unplug the motor and plug it in again they will run sometimes for a long time the next time for only a few minutes. I did unhook the engine battery for about 20 minutes and hooked it up again. That seemed to fix the problem but tonight they stopped again. Does anyone have any suggestions?