Adapts vehicles with separate turn & stop lights to standard trailer tail light wiring by way of sensor technology. Works with PWM or multiplexed systems requiring 2, 3 or 4 wire hook-up. Rated for up to 4.2A for turn & stop, 7.5A for taillight trailer circuits. Work with standard & LED bulbs. Integrated auto resetting short & overload protection. Works with low side switched vehicles. Installation wiring kit is not included.