• Diesel Laptops CAT 70 Pin ECM Bypass Breakout Cable

    Diesel Laptops CAT 70 Pin ECM Bypass Breakout Cable



    Diesel Laptops Bypass Breakout Cable for CAT 70 Pin ECM

    This is a bypass breakout cable used to connect to CAT 70 Pin ECM engines.


    • 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 the more "newer" CAT engines, which includes the C7, C9, C11, C12, C13, C15, and more. Some sample engine serial numbers (ESN) that this CAT cable harness would include: CAT C11, C13, and C15 with an ESN of KCA, JAM, KCB, BXS, SDL, LEE, MXS, NX, or RKS. And CAT C7 and C7 with an ESN of KAP, LBM, NPH, SAP, WAX, YPG, 9DG, CKP, ETK, LFE, LFR, SRB, C7S, or C9S.

    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 70 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.
    Vendor: Diesel Laptops
    Part Number: BYPASS-CAT-70-PIN
    UPC: 735520736831
    Length: 10 inches
    Weight: 1 lb

    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 Cable Kit

    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
    Contact Us


    If you have any questions about this or any other product, please don't hesitate to contact one of our Diesel Laptops experts at (888) 983-1975 or by clicking below!

    Contact Us

    Customer Reviews

    Based on 3 reviews
    Daniel Anderson
    Works great good quality

    Daniel anderson anderson truck repair

    James F
    Fast shipping and very well built product

    Very well built product fast shipping

    John Evens

    Diesel Laptops CAT 70 Pin ECM Bypass Breakout Cable