1985 Other Volkswagen Models ignition switch

Some one gave me a 1985 vanagon, has not ran in 5 years. I have replaced a bunch of wires that mice have chewed, all that I can see any way. When I went to start it the ignition switch seemed like it didnt have any resistance it would go forward lights would come on but it never turned over. Then I took the key out and lights stayed on. Not sure if I should replace switch or controll unit. Or somthing I dont know about. Any help would be much appreciated.