I have new 2021 C28, bought in MD, went out for about 6 days there and trucked boat to Maine. When I took possession of boat in Maine, the crossover switch was on. It had always been off in MD. With the crossover switch off, no power is available for GPS, VHF, nav buttons, windlass, cabin lights, fridge, engine hatch; however, there is power for cook top, microwave, and A/C. This occurs with or without shore power. What is going on? Thank you, Nevis