LIGHT CONNECTORS UNIVERSAL KITS ARE DESIGNED FOR VEHICLESTHAT ARE NOT EQUIPPED WITH FACTORY TAILLIGHT PLUGS ANDCONTAIN EVERYTHING NEEDED TO COMPLETE A 4-WIRE FLATAPPLICATION. POWER CONVERTERS COMPLETELY ISOLATE THE TOWVEHICLE FROM TRAILER MALFUNCTIONS.POWER IS TAKEN DIRECTLY FROMTHE BATTERY FOR ISOLATION AND BRIGHTER TRAILER TAILLIGHTS.EACH UNIT CAN POWER UP TO 2 SETS OF STOP/TURN SIGNALS ON THETRAILER AND POSSESS A REPLACEABLE 4-WIRE FLAT EXTENSION.CIRCUIT GUARDIANS ALSO PROTECT THEMSELVES FROM SHORT CIRCUITOR OVERLOAD DESTRUCTION UNIVERSAL KIT FOR VEHICLES EQUIPPEDWITH COMMON BULB TURN SIGNALS AND BRAKE LIGHTS