This is for a replacement harness only. It does not include a switch. If you need a replacement switch as well, go here.If you have an older (3+ Years) Stealth Module, please read below: The following Stealth Modules have a MAP version and a non-MAP version harness: Ford Powerstroke 6.7L (2011-2019)Chevy/GMC Duramax L5P 6.6L (2017-2022)Chevy/GMC Duramax LML 6.6L (2011-2016) The following Stealth Module has two different harnesses based on if you have the previous discontinued version or the new platform: Ram Cummins 6.7L (2013-2018)If you have any questions about which version you have, please give us a call!