Combining 110v & 12v charging systems
Your 110v shore power charger converts the 110v AC to a charging current of 12-14 volts DC. Once the shore power is unplugged, the charging stops and your solar panel can kick in to trickle charge your batteries. If your solar panel doesn''t already have an isolating circuit, you can isolate your solar panel from your shore power by simply installing a diode in-line between your solar panel and the battery. This will limit current flow to one direction only. Many panels already have this protection built-in and a quick check of the manufacturer''s specs should tell your whether yours does or not. Hope this helps.