Convert your 2006-2018 Ram with 6-pin injector connectors to the 2003-2005 4-pin injector connectors with a plug-and-play conversion harness from Fleece Performance.  This conversion harness is for use on a 2006-2018 Cummins where a 2003-2005 rocker box style is used. Produced in-house, Fleece uses a manufacturing process including fully automated wire cutting and terminal crimping to ensure you get the highest quality replacement parts you need! Wiring is hard and requires a lot of patience and a steady hand. Take the hassle out of it and trust it to a group with a reputation for excellence.