[QUOTE=nswenson]There is nothing to "sychronize". The motor and cam have no sensor other than the limit switches. If the limit switches are not activated, the motor will run continuosly while hold the up or down selector.
thanks for the reply,but I believe you are wrong. The limit switches ride on a roller that has several grooves that turn the switches on or off. Depending on what position the windshield is in and where the roller is positioned changes the stop points in the travel of the windshield. One spot on the roller turns off both switches so it will not go up or down.
Good news is I figured it out by moving the roller one tooth at a time, reassembling and testing. It was a tedious job but it is now working fine. I also found what caused the original problem. Last year I installed an aftermarket HID head lamp and the ballast was close enough to the relay to break the wires off from vibration or heavy bumps. I simply pulled the ballast from the velcro attachment and moved it to the right about .25 inch