Tekonsha (119250) T-Connector Activates a trailer's stop/turn/tail/running lights without cutting or splicing into your vehicles wiring system - simply snap on included current sensors Use when: trailer has more than 1 light assembly per side and is equipped with multiple clearance or running lights; if tow vehicle may tow a variety of trailers; if tow vehicle has 'lamp out' sensors Re-settable short circuit/overload protection - guards itself and the tow vehicle from shorts and wiring install mishaps; rated at 4.2 amps for turn/stop circuits, 7.5 amps for taillight circuit Works on all vehicle types including standard, PWM and/or multiplex systems, ensuring full brightness of the trailer lights during operation; can be used on 2 or 3 wire systems Works with either LED and/or incandescent bulbs (vehicle & trailer); includes comprehensive instructions; backed by Tekonsha's 1 Year Limited Warranty