Hi Folks! New to the forum and have a question. 32 foot Savoy LX newly purchased. I brought it home and hooked into power at my house. While connected in this manner I notice that when I have 3 lights on I get this very faint high pitched squeal coming from my converter box inside the camper. When I turn on an additional light the sound gets cut in half...add one more light and the sound goes off completely. Conversely, if I go from the 3 lights being on to 2, the sound gets cut in half...if I go to one light on only, the sound goes away. Any thoughts? Thanks in advance!!