9 TRAILER WIRING KITS COMPRISING ELECTRICAL WIRES, WIRING HARNESSES, TAILLIGHT CONVERTERS, CIRCUIT BREAKERS, ADAPTERS, AND TRAILER CONNECTORS, SOLD INDIVIDUALLY AND AS A UNIT; TRAILER WIRING ACCESSORIES, NAMELY, CIRCUIT GUARDIANS, BRAKE CONTROLS, BRAKE CONTROL CONNECTORS, POWER ADAPTERS, TRAILER PLUGS, TRAILER SOCKETS, MOUNTING BRACKETS, CONVERSION BULBS, CIRCUIT TESTERS, DUST COVERS FOR TRAILER WIRING ACCESSORIES, SPLICE CONNECTORS, AND TAILLIGHT CONVERTERS; AND HEADLAMP AIMING KITS COMPRISING HEADLAMP AIMERS COMPRISED OF OPTICAL METERS AND LENSES, LIGHT INTENSITY METERS, CALIBRATION FIXTURES, HEADLAMP ADAPTERS, AND STORAGE CASES THEREFOR