XTPTFABS SGW Security Gateway PassThru OBD2 Bypass Cable for 2018–2021 Ram Cummins — OE-fit, Plug-and-Play

The XTPTFABS SGW Security Gate-Way PassThru Harness Bypass Cable lets service tools communicate through the vehicle’s OBD2 port on 2018–2021 Ram Pickup Cummins models without triggering gateway lockouts.

When working on modern Ram Cummins trucks, factory security gateways can block diagnostic or tuning tools from accessing some vehicle modules. This harness provides a clean, plug-and-play route so legitimate technicians and aftermarket programmers can reach blocked controllers while preserving connector fit and OE-style routing. It’s built to OE-fit standards and designed to install quickly for shop efficiency.

How does this bypass cable enable diagnostics and programming?

The cable re-routes OBD2 pass-through signals around the vehicle’s security gateway so diagnostic devices can access restricted modules. It’s wired to mirror factory connectors and maintain proper pin mapping, allowing tools to communicate as if the gateway weren’t blocking traffic.

• Direct plug-in to the OBD2 port and affected module connectors
• Maintains correct pin assignments for reliable data flow
• Restores access for programming, flashing, and advanced diagnostics
• Reduces the need to disassemble dash electronics for access

Which vehicles and situations is this compatible with?

This harness is specified for 2018 through 2021 Ram Pickup trucks equipped with the Cummins engine where the OEM gateway restricts OBD2 access. Confirm your model year and connector type before ordering to ensure fitment.

• Compatible with 2018–2021 Ram Pickup Cummins platforms
• Intended for trucks experiencing gateway or module access limitations
• Best for technicians, tuners, or fleet mechanics needing full module access
• Not a universal cable — verify vehicle specifics first

How difficult is installation and what tools are required?

Installation is straightforward for anyone familiar with OBD2 and engine bay connectors and typically takes under 10 minutes. The harness is made to OE shape and fit so it installs where the factory harness would, with minimal tools and no splicing when matched to the correct model.

• Simple plug-and-play design — no soldering required when matched to vehicle
• Typical install time under 10 minutes for trained staff
• Requires basic hand tools only (trim tool or small screwdriver occasionally)
• Follow vehicle-specific guides and confirm pinouts before use

What quality and support can I expect from XTPTFABS?

The harness is manufactured from durable materials and undergoes quality checks to meet OE fit and function. XTPTFABS offers customer support for fitment questions or troubleshooting to help you get the part working correctly in your application.

• High-quality materials designed for long-term use in vehicle environments
• Tested for correct shape, fit, and connector function
• Customer service available for installation or compatibility questions
• Return or support guidance provided if issues arise

Who is this for: This XTPTFABS SGW pass-through harness is aimed at professional mechanics, aftermarket tuners, and fleet maintenance teams who work on 2018–2021 Ram Pickup Cummins trucks and need reliable access to otherwise blocked vehicle modules. If you require full diagnostic or programming capability without invasive disassembly, and you’ve confirmed model compatibility, this harness provides a fast, OE-style solution.