1#. i have a 76 as well and if i wasn't out of state at the moment i would go look and make sure but there is a hazard switch and defogger switch down there.
2# i am pretty sure those are not factory vinyl was the standerd.
5# and that should be located under the steering wheel and to the right. but if this is a right hand driver it may be backwards or different all together lol.
sorry i cant help with anything else good luck with your search.