Tekonsha 2 to 3 Taillight Converter [118158]2 to 3 Taillight Converter 2 to 3 Taillight Converter for Connecting Tow Vehicles w 2 Wire Systems to Towed Vehicles w 3 Wire Systems Allows R. V.s & other vehicles with 2 wire systems to tow vehicles and trailers with 3 wire systems Note: *This module will not work with LED lighting on the tow vehicle. The tow vehicle would have to have incandescent lighting WARNING: This product can expose you to chemicals including di(2 ethylhexyl)phthalate (dehp)