• Heat-sealed diodes to connect your motorhome's running lights, turn signals and brake lights to your towed vehicle.
• These diodes prevent the back flow of electrical feedback to protect both vehicles' electrical systems.
• All the necessary hardware comes with each kit to include: 4 heat sealed diodes, 26' 4-conductor 16ga wire, butt connectors, ring terminals, nylon ties and wiring instructions.

Demco 9523010 Towed Vehicle Taillight Wiring Diode Kit