The four wires going to the Black Water Tank and the four wires going to the Grey Water Tank were broken when I purchased my Tioga foot motor home, thus my gauges do not work.  

Does anyone have a wiring diagram that will tell me which color wires go to each of the 4 connections on each tank?  My unit is a 1988 Tioga, 26 feet long, it is an older unit but it has almost no miles on it.  I have not been able to find a wiring diagram for the RV.  I would settle for just knowing how to reconnect the 4 wires.

I have a 1993 Tioga class C and I haven’t had any luck finding wiring diagrams. I have no power to my propane alarm which seems like a major safety issue, especially when I suspect we have a leak somewhere (can smell propane in the coach when the valve is open). Ugh previous owners saved owners manuals and receipts meticulously but the owners manual is very generic and I don’t even know where the wires for the alarm come from. Obviously the 12v circuit but unless I start tearing out stuff I can’t see where they go. I was told by REV that there are no service manuals. I kind of feel like there should be some sort of blueprint or basic wiring diagram out there for these older units. Between normal wear and tear and rodents there’s bound to be broken wires at some point. If you find anything let me know.