Most CO detectors (as opposed to LP detectors) in travel trailers are not hardwired into the trailers harness. They are like the smoke detectors, battery powered only (either 9v or AA, depending on model). They are finicky beasts and unreliable in their operation at best. Your best bet, IMHO, is to go to Walmart and buy a new one...unscrew the old one from the wall and screw the new one on.
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My 2 cents, your mileage may vary...
Don
Bronwyn
2 Cats; J-Lo and Ragamuffin
2011 Keystone Cougar 318SAB
2011 Ram 2500 Longhorn CTD HO
Built in brake controller and exhaust brake
Tri Glide TrailAir Pinbox / B&W Companion Hitch
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