Rear view mirrors

Hi I have a 93 dodge 150 4x4 it has electric mirrors
and they not adjusting they will just pop like the
gear teeth are jumping Its been a long time since
I used them and found a dirt dobber nest in them
wash it out so I figure I just need to get to the
elec motor and hinges and clean things up a bit
but how in the heck do you get to it anybody
ever done this
thanks