Good news, Thor did email me the chassis wiring diagram and the control panel wiring. The control panel diagram shows the switches for the tank heaters but no wires connected, just like mine was. Luckily the chassis wiring did show the tank heaters and gave wire colors. If you have a Thor product I would make up a reason to get these and call Thor now before you really need them. They are not easy to read but they do give wiring colors and the position in the plugs.
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