Question the first::
The power mirrors on my truck have not worked since I bought the truck. I checked for power at the switch and its there when pressed, so I know the switch is good. I keep meaning to tear the door panels apart and follow the power to wherever it stops, but I always forget when I have free time. The fuse and relay have been checked/replaced as precautionary measures to no avail. The door courtesy lights do no come on when the door is opened and the center dome/bed light do not work when turned on at the switch or when the door is open. Since the door ajar beep comes on, I at least know that sensor is working. The other thing is the wiper rinse does not always work. Sometimes it will work the way it should, other times it will only pump fluid through it after I turn the wipers themselves on. I'm wondering if there is something that could be affecting all these things. Have any of you guys dealt with anything like this?

Question the second::
I recently changed the gears in the rearend of my truck and haven't done the front. Did you guys that did the front do it with the differential on the truck or did you remove it and do it on a table? It doesn't seem like there is a lot of room to work on it while its on there. Are there any problems you ran into that I should know about?

Thanks!
-James