All ActivityMost RecentMost LikesSolutionsRe: Battery Isolator noiseThanks for the info. I will let you know if I have any success with your info. I cleaned all the battery connections today and made sure there were no other simple problems that I could have missed. Again thank you so much.Battery Isolator noiseWe have a 2006 Mandalay Presidio we just bought in March. The battery Isolator makes a noise like a hum that is audible from inside the coach as well as sitting under the awning. Does anyone else have this problem? The isolator is a Intellitec Big Boy #77-9006-120. The Intellitec tech support said that this is normal. It seems to loud for that to be the case. Any solutions?