losen Mirror led light how to fix it?
 

I have a 2007 Volvo S80 3.2, and accidentally crashed the mirror, their cover was dropped while going in reverse, the mirror plastics are fine, so is the mirror as it was a very low speed, but the led light became erratic so I tried to move it into place and suddenly it slipped inside the compartment, I can pull it out, but I would like to know if there are detail instructions about the right way to disassemble the driver's side mirror and then connect the LED into place, and reassemble it properly afterwards.

The owner's manual instructions are far from great ...