Traveling on the Oregon coast where it is cold and damp. Have noticed a buzzing sound coming from underneath in the bedroom floor area. Thought at first it was due to a combination of cold and moistur...
Buzz does not sound like arcing. 2 very distinct sounds. Since this happens while you driving, are you running the generator? If yes possible it could be the ATS relays chattering. If not then you need to isolate when it happens, what is turned on AC, generator or shore power. No AC only DC on. What is in that area.