So I brought home our NTU pup and cleaned and set her up. It has a new battery Marine/rv battery (not true deep cell but they put it in for free). So when the pump runs the lights dim about 50%. I am an electrician so I will bring my meters and some tools home Monday, but is this normal with other peoples trailers? Just seems like alot of drop to me and that is with it plugged in. It as about the same with it unplugged. Trailer is a Coleman Casa Grande.