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Wiring Diagram For the Replacement Single Zone Thermostat for Dometic RV ACs  

Updated 04/21/2025 | Published 04/20/2024

Question:

How do I wire it in which color wires go where

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Expert Reply:

Carl, It'd be much easier to show you the diagram rather than to try and explain everything so I've gone ahead and attached the wiring diagram for the Replacement Single Zone Thermostat for Dometic RV Air Conditioners # DMC79FR for you to check out.

expert reply by:
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Bryce D
Diagram 1
Diagram 1
(click to enlarge)
Diagram 2
Diagram 2
(click to enlarge)
Patrick profile picture

Patrick

4/18/2025

My domestic thermostat in my camper has 3 wires, red. Orange and white, you said orange goes in the center hole what about the other two?

Bryce D. profile picture

Bryce D.

4/21/2025

@Patrick If the orange is the comm wire, then the one of the two wires should be the 12v positive and the other the 12v neg. You'd have to test them to find out which is which though.

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