Forum Discussion
Archie_Kravitz
Apr 17, 2014Explorer
I can either disable or enable brake light activation with the exhaust brake with Cummins software(INSITE). If your lights are not coming on, they are disabled with exhaust brake at the ECM on the engine(or electrical problem somewhere else)..
About Motorhome Group
38,763 PostsLatest Activity: Dec 13, 2025