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Unfortunately, the manufacturers don't always follow good protocol about the choice of wiring colors. You can sort this out with a small multimeter OR you might give Jayco Customer Service a call at(###) ###-####and give them the last 8 of your VIN number and they can send you some wiring diagrams for your camper........very handy to have! If you want to sort this out, I need the model number of your water heater. Please get back to me if you need more as all follow ups are included in our fee. R.J.
Did you have any luck with Jayco Customer Service? I am enclosing a link to the Atwood Manual for their water heaters which have all the wiring diagrams and testing. Very helpful to have and I would Bookmark it or print out a copy. R.J.