I have a 1929 popout switch. When I bought it the head was seperated from the cable. Can anyone tell me the correct length for a 1929 cable? Im going to use it on a 1929 pickup. The key wont turn (maybe it's the wrong key I don't know I bought it with two keys one is a repop blank key so I will take it to a locksmith and have him check the numbers to see if it's the correct key or not. My question is I want to go through it so I know it will be dependable. Is there any place I can go to find "how to restore it" info? Thank you, Bob