My driver side headlight quit moving on my formula so I ordered new gears from Brent and installed them but that didn't fix the problem any other ideas ??? Also the paassanger side is still poping up when I turn on the parking lights

 

Check all your grounds. If it's not a ground my guess is your motor is shot. And, if I'm not mistaking this subject was moved last time there was a headlight question. (Probly to the genral f-body section)

 

I'm thinking the headlight control module went south

 

Try some of these items...

1) Disconnect the raise/lower arm and then try the motor. If it works you could have a binding issue. If it doesn't work, problem is electrical.

2) If electrical, most commonly the connector gets all corroded up. This needs to be cleaned out or replaced. If connector looks good, plug the motor that isn't working into the OTHER headlight connector that IS working to test to see if you have a motor problem. If it then works, not a motor problem and you've now narrowed it down to either a wiring issue for that side, a connection problem and the control module for that side, or a control module that is just plain shot

And, yes, last headlight question I moved to the General forum and I'll move this one there too

Shoot me an email or post here if you need any additional help with this. I've seen/heard about I believe every problem that has ever come up with these headlight motors. LOL!