OBDII CSP-5 Switch (2006-2021 Cummins MM3 & EFI ONLY) (2017-2023 Duramax L5P)

USED FOR EFI AND MM3 APPLICATION ON CUMMINS

USED FOR HP ON L5P DURAMAX

Dodge Cummins trucks specifically, when using the MM3 platform for tuning, require the use of a CSP5 switch that connects through the trucks’ OBDII port. Unlike other vehicles that can get away with a standard rotary switch with MM3, the 06-20 Cummins needs an extra push to work properly. The beauty of this switch, is the OBDII connector has a flip side that allows you to still get power to other aftermarket accessories that require use of the vehicles’ OBDII port.