Brand new Headlamp Headlight Wiring Relay Kit. Adds relays to most older British cars that use 2 headlights. Relays increase the amount of power that makes it to the lights increasing brightness. They also greatly reduce the amount of current going through the switch thus increasing switch life. These fit all Triumph TR3 TR4 TR4A TR250, TR6, MG TD, MGA, MGB, MGC, MG Midgets, Austin Healey 100-4, 100-6, 300, and 3000 and Sprites. Includes Instructions.