Add the OEM Water In Fuel (WIF) sensor and warning light to your Ram 6.7L Ram Cummins with your AirDog system. This simple, plug-and-play kit includes a wiring harness that connects to your OE WIF plug and a sensor that threads into the bottom of your AirDog water separator, keeping your OE Water In Fuel light. Use this kit with any AirDog product and the AirDog Water Separator (WS100), which is also included in the kit.