Enjoyed a family reunion at Lake of the Ozarks in MO, introducing family to pleasures of sailing vice powerboating, particulary on night sails under full moon plus/minus a couple of nights. All equipment, especially all lights functioned normally. USCG Aux representative at my marina caught up with me after return for annual safety inspection. All went well but now neither the running lights fore and aft nor the bilge pump worked. Battery checked fully charged and all other lights worked fine. Bulb filaments visually check OK and there are no evidences of loose wires. Looking for common occurrences and remedies among other sailboat owners.