If you’re installing a Fuel Rail Pressure Gauge on your 2003–2012 Ram Cummins, a clean and reliable signal source is key.

That’s where GlowShift’s vehicle-specific Fuel Rail Pressure Gauge Wiring Harness for 2003-2012 Dodge Ram 2500 & 3500 trucks comes in. Designed specifically for 24 Valve 5.9L Cummins and 6.7L Cummins diesel engines, this harness delivers a true plug-and-play installation without cutting or splicing factory wiring.

Built for compatibility with 3-pin OEM fuel rail pressure sensors, this 6.7 Cummins and 5.9 Cummins wiring harness connects directly to the factory sensor for a seamless installation. Simply disconnect the stock rail pressure harness connector, plug this wiring kit into the factory sensor and harness, and you’re ready for the final step. Connect the green and black wires from your gauge harness to the matching wires on the pigtail harness, and you’re ready to read accurate fuel rail pressure data for your Ram truck.

This Cummins rail pressure adapter harness measures 12 inches long and includes 19 inch sensor and ground lead wires, giving you flexibility during installation while maintaining a tidy engine bay appearance. The direct-fit design not only saves time but helps preserve the integrity of your factory wiring—ideal for daily drivers and performance builds alike.

Each 5.9 Cummins and 6.7 Cummins wiring harness includes detailed installation instructions, Free Lifetime Technical Support, and a One Year Limited Warranty. Whether you’re monitoring performance, tuning, or safeguarding your 2003-2012 Dodge Ram 24 Valve, GlowShift’s fuel rail pressure wiring harness makes installation straightforward, dependable and professional-grade.