Tow Ready 119191 Modulite HD Module Tow Vehicle Circuit Protector
* Plugs onto any T-One or 4-Way Flat Connector
* Powers the trailer's stop, turn and tail/running lights directly from the tow vehicle's battery.
* Virtually eliminates current draw on the vehicle's taillight circuits.
ModuLite HD w/ Circuit Protection, up to 4.2 amps per stop/turn circuit & 7.5 amps per tail circuit, includes wiring kit.