well several questions ..and do not give up, it is Italian work out of the 70teess.
1) window motors
- read the tech notes, there is a replacement model for think Ford Windstar motors, much better. Count the teeth as they differ think you need 11 vs 14 or so. All out and replace not expensive . This takes the ugly and AMP sucking stuff out..hence issues with the consol switches etc..
2) Dome light, well there should be a switch within the dome light. Issue as MarlinJack pointed out the old type bulb kills the plastic liens as it gets tooo hot. Replace by LED light, and CLEAN the switch mechanism..
3) Wipers: yes they freeze up as the grease dries out. There is info on the forum on tech notes. In short: open below fender the cover (pass side), loosen screws of motor fixture , take motor out INCL the long steal cable which supplies the wipers. You might need to take the wiper arms off (use a small block of wood as lever then pull them up and out). All needs to be cleaned with new grease. Worst case you have to open the 2 vents covers (fiddle a decent cable through the slits and pull the whole stuff up). Then you can access the gear for the wipers (nasty, only for small wrists). Then you are goood..
fire it up....it is a wooow..
Matthias