When I got my Challenger in 2004, the driver side mirror wiggled like crazy - no wonder, I find it's a remote control mirror which wasn't hooked up. The guys I bought the car from had installed new door panels and conveniently forgot to drill a hole in the door panel and hook up the remote control mirror. Well, I want to get the remote mirror control back in my life, I've got the threaded chrome bezel for the control, but how do I keep the unit from falling back out of the hole? Is there a threaded nut or c-clip or something on the backside of the door panel to hold everything in place? And if so, who might carry such an item? Thanks for any help!