Got my lights working, at least mostly. My backup lamps were wire through a block connector going to the back that has been disconnected since I bought the bus. I spliced the one wire around the block connector and now I have backup lamps - which are bright as hell, I can see why these aren't approved.
My stop/turn/tail lights are working now, although only the tail light (and tag light) and brake light functions are working. They do not blink along with the turn signals, which I don't understand, since my original tail lights did.