OK we just got done doing this. I was trying to reply to a post that was too old so I had to make a new thread.
When we raised the TV and held the button we got the motor chatter. When we lowered the tv, the motor chattered. The motor is supposed to shut off when it reaches the limit even though you are holding the button.
The guy who designed this said ours was modified. We only had to take off one panel. The side panel over the drivers seat. Not even the upholstered surround.
There are two screws side by side over the rod at the top of the box facing the windshield. They are supposed to be turned outboard or counterclockwise to you. one is for the down limit the other is the up limit.
We decided to just let go of the button early when raising the TV and double click the switch when lowering it. (that reverses the motor) We didn't want to take the chance of the photo cell falling off the back of the screw into the welded sealed box.
Here are the files i have. None of them seemed to match what we had. I hope this helps someone.
2003 Monaco Signature Baroness