The ground wire located on the passenger headlamp assembly limit switch is not properly grounded to the car body or the switch itself is bad. If the headlamp door is not depressing the limit switch you may need to tighten the nut on the pivot arm so that the nylon washer isn't slipping as much.

 

If I have someone else turn the lights on and I press the limit switch on the radiator support it obviously stops. So when they turn the lights off I continue to hold and after I release it, it still won't close unless I give it a nudge. The nut on the long bolt for the pivot arm was torqued per AIM specs. The grounds on all 4 limit switches are on the bottom terminal.

 

Oops, I made a mistake the limit switch that has the bad ground is the passenger side attached to the firewall not the headlamp assembly.

When the door opens and presses the button on this limit switch that will stop the motor from running and it will also provide the ground for the motor when the door is initially closing. After the door starts closing the button on the switch will no longer be pressed in and the motor now gets it ground through the dark blue wire that is also connected to the limit switch. It is that initial ground connection that is not working. The reason you can close the door by nudging it is because you are mechanically operating the limit switch and changing the ground from the black wire to the dark blue wire.


Don't forget that the black wire on the limit switch needs to be grounded all the way back to the batteries ground. If you recently painted some parts then it could be that this paint is preventing a good connection to the metal.

 

I did not have a ground from the limit switch back to the batteries ground. I tested it with a jumper wire and it worked. I just need to add the ground like you said. Thank you for your help!!!!

 

Awesome! glad you got it working.