Fuel Rail Pressure Gauge Wiring Harness

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    Free Shipping Over $50Contiguous USA

  • One Year Limited Warranty

    One Year
    Limited Warranty

  • Free In-House Support

    Free In-House Support


GlowShift’s Fuel Rail Pressure Gauge Wiring Harness installs directly to the fuel rail pressure sensor for a clean installation without having to splice into any factory wiring. Simply disconnect the rail pressure harness connector and plug in the new rail pressure pigtail harness into the factory sensor and sensor harness. Connect the green and black wires from the gauge harness to the matching wires on the pigtail harness and you’re set! This rail pressure pigtail harness adapter features a length of 6” with 9” sensor and ground lead wires. GlowShift includes installation instructions, a one year limited warranty and free lifetime technical support with each purchase.

Compatible with:

  • 2003-2012 Dodge Ram 2500 3500 5.9L & 6.7L Cummins
  • 2002-2018 Duramax LB7, LLY, LBZ, LLM & LML
Tech Specs
Gauge Type: Fuel Rail Pressure

Includes an installation guide which is available online and included with your order. You can also visit our library of installation videos which include complete step-by-step tutorials and useful tips on how to install a wide range of GlowShift products.

Download and Print the PDF PDF Instructions View Our Help Center Help Center

Product Reviews

  • Plug an play

    Posted by Chet on Apr 25, 2019

    Very simple to install gust two wires to hook up then plug an play

  • Tight fit

    Posted by Austin on Mar 11, 2019

    The rail pressure sensor is at the back of the fuel rail which makes it hard to get to, the end of this harness that goes onto the sensor must not be made to the same specs or something because it took some force to get it to click on. The last little bit to get the tab to click over the notch I thought impossible but after trying again and again it eventually went. Rest of the harness worked wonderfully.