I have a 1988 Pontiac Firebird which originaly has the 2 wire lamp door actuator, the origianl motor stopped actuating up and down, I had the older 3-wire motor lying around so I had that on the car until i could rebuild the original motor, but it only work going up, now I took it off and I rebuilt the original one with new aluminum gear and bushings from top down solutions. so I have everything connected properly and it does not go up or down, I attached a wire from the gray/blk wire and grounded it and the down function worked but with this wire in place my right hand side lamp does not function, so i took the wire i added off and the right one fuctions normal but the driver side actuator does not function. but the actuator does work with straight to power lines. so its my problem with the headlamp module?