I just had this done after almost a year of not being plugged in. It is in the back of the electric box. Put your hand under the lower cabinet behind the breaker box, there lies your problem. The RV service man told me this when i brought it to them, because my
lights always dimmed after a few days, even while plugged into shore power. The RV man plugged it in, just how he did it, I really don`t know,or what type of plug it is, all i know it works now. Same guy at
Scamp that put yours together, put mine together as well. Carl