Autel OBD2 SGW Bypass Cable for 2018–2020 Dodge Cummins RAM 1500/2500 — 16‑pin + 2‑pin Plug‑and‑Play

The Autel Original OBD2 Security Gateway (SGW) bypass cable is a plug-and-play 16-pin + 2-pin adapter that lets compatible diagnostic scanners access most vehicle modules on 2018–2020 Dodge Cummins RAM 1500/2500 models (Cummins diesel only).

This Autel adapter is a dedicated security gateway bypass cable — not a diagnostic scanner itself — designed to overcome factory SGW restrictions so aftermarket or professional scan tools can communicate directly with ECU modules (excluding the stereo). It’s reusable, requires no permanent wiring changes, and includes reinforced construction and shielding to keep data transfer stable during troubleshooting and maintenance.

How does this cable let my scanner communicate with a gated RAM?

When a vehicle’s security gateway blocks direct access to modules, this adapter provides an authorized route between your scanner and the vehicle’s controller area network. It connects to the factory OBD port and the module’s bypass pins so the scanner can read live data, retrieve or clear codes, and perform diagnostics that would otherwise be blocked.

• 16-pin male plugs into factory OBDII port under the dash.
• Small 2-pin bypass connector inserts into the green SGW module.
• 16-pin female accepts your OBD2 scanner or interface cable.

Which Ram models and engines are supported by this adapter?

This cable was developed specifically for Dodge Cummins RAM 1500 and 2500 trucks from model years 2018 through 2020 using Cummins diesel engines. It is not compatible with ECO Diesel models, 2018 Classic models, or certain 2020 Bighorn variants, so verifying the vehicle’s engine and connector type is essential before purchasing.

• Compatible: 2018–2020 Dodge Cummins RAM 1500 / 2500 (Cummins diesel).
• Not compatible: Dodge ECO Diesel, 2018 "Classic" models, some 2020 Bighorn variants.
• Confirm connector and protocol support on your scanner for full functionality.

What diagnostic tasks can I perform once connected?

With your scanner attached via the Autel SGW bypass cable, you can access most vehicle modules for live data monitoring, fault code reading, and routine system checks. Exact capabilities depend on your scanner’s feature set and vehicle protocol support — the cable provides the path, the scanner provides the functions.

• Read and stream real-time sensor and module data.
• Retrieve diagnostic trouble codes from accessible modules.
• Support maintenance checks and troubleshooting workflows.

How reliable and durable is the Autel SGW bypass cable?

Autel builds this cable with thicker conductors, multi-layer shielding, and wear-resistant materials to reduce interference and extend service life during repeated professional or hobbyist use. The design emphasizes stable, low-latency data transmission so scanners receive consistent signals during diagnostics.

• Multi-layer shielding minimizes signal noise for reliable communication.
• Thickened wire cores and reinforced connectors resist wear and bending.
• Reusable, no permanent modifications required to the vehicle wiring.

Who this is for: technicians, independent shops, and experienced DIY owners who need to use aftermarket or professional scan tools on 2018–2020 Dodge Cummins RAM 1500/2500 trucks. It’s ideal when the vehicle’s security gateway prevents a scanner from accessing modules, but buyers must confirm vehicle model, engine type, and that their diagnostic tool supports the necessary protocols and functions. Autel offers a 30-day replacement or full refund window plus a one-year warranty and 24/7 technical support for product defects or compatibility questions.