Why are the 12 volt lights working on shore power?
Why are the 12 volt lights working on shore power? With the 12 volt lights working when on shore power means the charger is working. Look for a large fuse between the batteries and the charger 12 volt output feed to the positive coach battery terminal (s). With a meter you should read a voltage at the positive terminals. They will read very low if no charging voltage is present. Why do my lights not come on when not connected to shore power? With 12 volts present when the charger is running when on shore power, one would suspect there...