My 91chevy 1500 windshield wiper motor has stoped working. The were messed up when I bought the truck 2 weeks ago. Used parts to fix the problem came with truck. The steering wheel was loose and needed tight end up so while tore down replacing the blinker,wiper,cruise control switch and arm I decided to go a bit deeper and tighten the 4 bolts just beyond the tilt housing. Well as I said wipers were already messed up. They had put a toggle switch in fuse box to operate wipers. Ok now I have replaced the switch and tight end bolts and put column back together and when I tryed the wipers nothing until I turned switch to high then no wipers but the amp gauge dropped by half. Also I could tap on intermittent panel and slowly the wipers would raise a little bit with each tap until the made it half way then they would finish cycle and stop in normal resting position. Can someone please help b4 it rains again? Thank u.