This is only for OEM headlights not aftermarket headlights. IF YOUR RAM CURRENTLY HAS THE DRL FUNCTION ENABLED THIS HARNESS WILL NOT WORK ON YOUR VEHICLE. ALSO THIS HARNESS WILL NOT WORK ON CANADIAN VEHICLES AS THE DRL FUNCTION IS AUTOMATICALLY ENABLED ON THESE TRUCKS The Dodge RAM projector headlight harness allows Ram owners to upgrade their base headlights to the Dodge OEM projector headlights. This is a direct plug and play harness and comes with everything you need to install. Product utilizes OEM connectors and is wrapped in industry grade high heat fabric tap and utilizes water tight seals.Ram owners with a 2009-2012 model trucks: You can add the 2013+ projector headlights to your truck and use this harness to allow them to work properly. This product does include a small heat resistor on each line that will heat up when your blinker or hazard lights are turned on. Install Instructions: Harness is plug and play, install portion of harness with load resistor to the original turn signal connector. Sold as a Pair Special Note: This product has been verified to work with OEM projector headlights. Any other applications, please reach out and check with us first. IF YOUR RAM CURRENTLY HAS THE DRL FUNCTION ENABLED THIS HARNESS WILL NOT WORK ON YOUR VEHICLE. ALSO THIS HARNESS WILL NOT WORK ON CANADIAN VEHICLES AS THE DRL FUNCTION IS AUTOMATICALLY ENABLED ON THESE TRUCKS