I can try to help you on #2 and #3.
Where you have the front light dome, is the switch all the way down? There are several options to choose from.. such as having both the main and front passenger light on, just the passenger light on, totally off, and just the main light on. The last option is the one where if you open the front doors, the light would turn on. Make sure you have the last selector chosen and not the 2nd from the top(off).
I heard its normal for 126 trannies to take a second to engage. Mine does that too.. and I have gotten used to it. It takes a second to change gear from reverse to drive on my car.
Lets see what the real pro's on this forum have to say. I am curious to see if I was of any help