Two are 12vdc going to a switch; (maybe Red/Black?) most all controls are 12v, e.g. LP-Gas
If you also have 120vac elements/ controls, for when plugged in, or running GENerator, suspect that is the OTHER two wires (maybe black/white?) Good luck.
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THenne1713
2000 Conquest LE 6266, Class-C on 99-E450SD, 6.8, 2v, V-10
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