Dave5143 wrote:
Is it possible that your rig has an Electrical Management System installed somewhere inside?
I have one in my trailer and if the power source is unable to provide full current to the load (mine was routed through an electronic timer switch to power the fridge overnight before leaving home) then the contactor inside will click furiously to try to shed the load from the power as the input voltage drops.
I now use a dedicated circuit for the trailer when at home though it is still limited to 20A.
Not sure if I have a management system. It doesn't sound as if this would be the problem though if I am reading your response right. My clicking doesn't seem to change. It will click when I have no lights/ etc and the clicking doesn't change when I turn a few lights on and the AC.