RoyB wrote:
usually when this question comes up it is related with the accidental sparking of the battery cables which end up blowing an in-line fuse close to the battery install area. Sometimes the battery cables get reversed and this also blows the same in-line fuse along with two fuses in the 12VDc Power Distribution panel labeled REVERSE POLARITY.
Find these THREE FUSEES and check out.
The DC OUTPUT of the Converter/Charger unit goes directly to the Battery thru these three fuses... i.e. both the converter/charger unit and the installed battery both provide 12VDC to power the 12VDC Power Distribution Panel. A quick check is your ceiling lights. They are 12VDC lights and if all is connected will work when on SHORE POWER or BATTERY by itself.
Some installs may have a BATTERY DISCONNECT in this same line as well... This could be a manual switch or a SOLENOID type relay.
Roy Ken
Roy all the lights work when plugged into shore power, none work when on the battery itself.