I put my wiper motor back in, got all the wires hooked up right but when I hit the switch all I heard is a buzzing noise. I pulled the motor off of the mount but left the wires hooked up and tried it again and then it worked fine. But when I have it all hooked up, mounted and attached to the wiper arm it just buzzes or doesnt make noise at all The motor worked fine before and appears to work fine now just not when its all hooked up does someone have a clue as to whats going on? I wiggled all the connections/wires around, ran a jumper ground wire to the frame just to eliminate a ground problem and even tried LIGHTLY tapping on it with a hammer but nothing. Oh and I also made sure the wiper arm itself wasnt stuck. Thanks to any input.