This bypass cable is used on the Detroit Diesel engines with a DDEC V ECM connection. This bypass harness is used to connect directly to the ECM instead of going through the vehicle dash connector. The DDEC V replaced the DDEC IV, and was used in vehicles from 2007 and on wards.

Our Detroit ECM breakout harness & cables can be used for a variety of purposes, including:

• Most OEMs recommend NOT programming the vehicle through the dash connector, but instead go direct to the ECM. These are the perfect programming cables for such a project.
• You have an ECM that is not installed on the truck, and wish to do programming or modifications to it on the workbench.
• You are having issues with the diagnostic port on your commercial truck, and wish to bypass the vehicle wiring and go direct to the ECM.

Features

• Harness length is 10".
• Professional, quality manufacturing of cables made in the USA.
• All cables are tested on live ECMs and validated before shipping.
• 12-month warranty on all components

NOTE: This cable will not work by itself. You will need part number BYPASS-MAIN for this cable to function properly. Our unique design allows you to purchase this main cable first, then purchase the "ends" that you need to connect to various ECMs.