Tekonsha's Universal Taillight Converter is designed for use with import and domestic vehicles requiring a taillight converter to ensure proper towed vehicle light functions when tow vehicle has a different lighting system. Adapts tow vehicles with integrated turn and stop lights (2-wire system) to towed vehicles with separate turn and stop lights (3-wire system). Works with incandescent bulbs only. Does not affect the functionality of the tow vehicle's lights. All solid state components in converter. Will not work with low-side switch, multiplex systems and LED bulbs. Cannot be reversed to convert a 3-wire tow vehicle to a 2-wire towed vehicle. Includes instructions for installation. Backed by Tekonsha's 1 Year Limited Warranty. From it's humble origins as a manufacturer of RV stairs and steps in 1964, Tekonsha has evolved to become a trusted name in towing safety. The core product line consists of brake controllers, electrical wiring and trailer brakes. The Tekonsha line has long been trusted by professional towers and weekend warriors for worry-free travel.