Yes, I noticed the circuits are separate. It seems the only way to shut off the 12v side is to use the battery disconnect after pulling the shore power plug. I discovered my shore power receptacle was also fried. I eneded up replacing the receptacle and the twistlock connector on the shore power cord. I ordered a new cord and will swap when it gets here. I couldn't get the water proof cord or replacement end at the local RV supplier. I may get the correct end and make a custom length cord after the new one arrives. I only need 10 feet or so.