Recently purchased a 1999 Catalina 36 MK II with an inverter - but the OP was unresponsive to queries on how to use it - there is an outlet to the left of the service panel and a dedicated power strip in the cabinet next to the outlet. Prior to purchase new top-of-the-line batteries installed, battery charge is great. We've tried all sorts of panel combinations while disconnected from the shore power. I feel like I'm just missing something. Similar situation with the galley refrigerator - turn it on at the panel and turn the thermostat on and nothing - though it worked at the time of the inspection? Thank you in advance. Mutara Nebula II