Need some guidance

Yea I have a couple used printed circuit boards (PCB)coming and a used voltage limiter from a fellow FABO member. I'm thinking if I can get it going I might have a shop in Lincoln, NE check it out. I've had them do some work for me and I trust them. I'm paranoid now about the thing catching fire. All this because I was trying to replace a couple dash lights. I found a schematic and when I get time I'm going to try to unravel the mystery of the whole thing. Thanks for everyones help.