XTPTFABS PassThru OBD2 Bypass Harness for 2018–2021 Ram Pickup Cummins — OE-fit, Plug-and-Play

XTPTFABS SGW Security Gate-Way PassThru Harness is a direct-fit OBD2/OBDII bypass cable engineered to restore PassThru diagnostics and wiring functionality on 2018–2021 Ram Pickup Cummins vehicles.

If your Ram’s factory gateway or OBD port wiring has been modified, replaced, or disabled during repairs or aftermarket installations, this harness reconnects the vehicle’s diagnostic data path. Built to match OE fit and function, the cable streamlines re-establishing PassThru access so technicians and owners can use standard scanners and programming tools without custom wiring or lengthy workarounds.

How does this harness restore OBD2 diagnostics on affected Rams?

The XTPTFABS SGW bypass cable routes the diagnostic lines around a disabled or altered gateway so the vehicle’s OBDII port communicates normally with scan tools. It reproduces the original signal paths and pin assignments to avoid compatibility issues with common diagnostic devices.

• Direct replacement harness for pass-through diagnostic connections
• Pins mapped to standard OBD2/OBDII pinout for scanner recognition
• Designed to reinstate data lines without permanent vehicle modifications

Which Ram models and years are compatible with this bypass cable?

This harness is intended for Ram Pickup models equipped with Cummins engines from 2018 through 2021. Confirm your truck’s model year and connector type before ordering to ensure a correct fit.

• Compatible with 2018–2021 Ram Pickup Cummins (verify model year)
• Matches OE connector shape and mounting points where applicable
• Not universal — check fitment prior to installation

Is installation difficult and what tools are needed?

Installation is straightforward for anyone comfortable with basic vehicle wiring and diagnostics. The harness is designed for quick swap-in replacement; most users report completing the job in about ten minutes with common hand tools.

• Simple plug-and-play connectors — no cutting or splicing required
• Typical installation time: about 10 minutes for experienced technicians
• Requires basic hand tools (screwdriver, trim tools) and a clean workspace

What quality and support can I expect from XTPTFABS?

XTPTFABS manufactures the harness from durable materials and subjects each part to quality checks to match OE shape and function. If you encounter fitment or performance issues, customer support is available to assist and advise on next steps.

• Constructed with high-quality materials for reliable signal integrity
• OE-style fit, form, and function to minimize troubleshooting time
• Manufacturer support offered for installation questions and concerns

Who this is for: technicians, fleet managers, and Ram owners who need to restore factory-level diagnostic access after gateway replacement, accessory installs, or wiring work. If you require quick reactivation of OBDII diagnostics on a 2018–2021 Ram Pickup Cummins without complex rewiring, this XTPTFABS pass-thru harness provides a practical, reliable solution.