What was found
RIGHT WING INSPECTION LIGHT, #3SEAT OVERHEAD AND UNDERSEAT LIGHTS INOP. WILL NOT RECHARGE USING EMER LIGHTS FAIL PREFLIGHT TEST PROCECEDURE GAINED ACCESS TO #2 EMERGENCY LIGHTING BATTERY PACK. UPON FURTHER INVESTIGATION. FOUND THAT THE FUSE WAS NOT INSERTED CORRECTLY INTO THE BATTERY PACK. GLASS FUSE WAS GOOD. RE-INSERTED FUSE INTO BATTERY PACK AND SECURED IN PLACE. MULTIPLE EMERGENCY LIGHTING BATTERY PACK POST-MAINTENANCE CHECKS GOOD, ALL WORK DONE IAW CE-680A SPM 20-30-25. NO FURTHER DEFECTS NOTED.