Diesel Laptops CAT 40 Pin ECM Bypass Breakout Cable

Diesel Laptops Bypass Breakout Cable for CAT 40 Pin ECM

This is a bypass breakout cable used to connect to CAT 40 Pin ECM engines.

Features:

• All cables are tested on live ECMs and validated before shipping.
• Professional, quality manufactured cable made in the USA.
• 12 month warranty.

This cable is used on "older" CAT engines, which includes the 3406E, C-10, C-12, and more. Some sample engine serial numbers (ESN) that this CAT cable harness would include CAT 3406E, C-10, and C-12 with ESN: 8YS, 9NS, 5DS, 1LW, 2PN, 1YN, 5EK, or 6TS.

If your engine serial number is not listed, please call or email us so we can verify for you. If you look at your ECM, and it has 40 pins, this cable will work.

Note: This cable also requires our Main Bypass Programming Cable to connect to the ECM. Our unique design allows you to purchase this main cable first, then purchase the "ends" that you need to connect to various ECMs.

Why would you need an ECM breakout harness?

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

ECM Programming

If you would like more information about ECM programming, check out this video or click below for a great blog post that goes in-depth on the subject, including what software is necessary.

Learn More

Bypass Master Cable Kit

This main cable is included in our Bypass Breakout Master Cable Kit along with the necessary cables to connect to Cummins, Detroit, and CAT engines.

View Kit