Starter switch

I installed a new starter switch. Did it all correctly, I think. Took out the pin and pulled out old one. Now it seems I need to pull out new one to get the cover off. Problem is it won't come back out, why?
Also there is a wire that goes to a switch it does not move when ignition is turned. Is that why my ignition is not starting my van? What started this was the key would turn freely and not seem to catch whatever it is to start the van.
Finally, my steering column is very loose and needs the bolts tightened that are why down in the column. Is there a way to tighten those without taking everything apart. Someone said it had to do with the tilt. I don't know. But now I got a van full of screws and parts and have spent a day trying to get that switch out. Please help.