Well all of them didn't quit working at once, if they did I would just replace the IPC. The wiring is not going to be a rats nest. I am an automotive technician so I know what I am doing, just wasnt sure one the factory sending unit ohm range. Also the PO had already hacked the wiring and I am also fixing those mistakes. For me to get a factory IPC and correct all the mistakes and what have you it will be easier going this route.