CTobd OBD2 SGW Bypass Cable 12+8 for FCA Alfa Romeo Jeep Dodge Ram — Red programming adapter for diagnostics & coding

The CTobd 12+8 OBD2 programming cable is a specialized adapter that lets compatible diagnostic scanners bypass FCA Security Gateway modules so you can read/clear codes, run active tests, perform coding/adaptation and other advanced functions on affected Alfa Romeo, Chrysler, Dodge, Jeep, Fiat and Ram vehicles.

This red 12+8 programming lead connects the SGW module’s two factory connectors directly to a standard 16‑pin OBD2 test cable or an OBD Bluetooth interface, enabling scanners that normally can’t communicate past the Security Gateway to access vehicle systems. It supports a broad range of diagnostic and programming tools (for example Maxisys family and many X431 and Tablet tools) and is intended for use on FCA vehicles equipped with the Security Gateway Module.

Which vehicles require this 12+8 cable to communicate past the Security Gateway?

Many FCA model years introduced the Security Gateway Module (SGM) which blocks direct scanner access through the OBD port. This cable is required for models that route module connections through the SGW and list specific model-year ranges for bypassing that route. Always check the vehicle year and SGW presence before attempting connection.

• 2013+ RAM Promaster series
• 2015+ Fiat 500X and RAM Promaster City
• 2016+ Jeep Renegade; 2017+ Alfa Romeo Giulia, Jeep Compass and Cherokee
• 2018+ broad coverage: Wrangler (JL), Ram trucks, Dodge Durango, Journey, Charger, Challenger, Grand Cherokee, Chrysler 300 and Pacifica
• 2019+ most FCA models; 2020+ all FCA vehicles

How do I install and use the CTobd 12+8 adapter with my scanner?

Installation is a straightforward four‑step process that requires locating and disconnecting the SGW module’s 12‑pin and 8‑pin plugs, then inserting the adapter to bridge them to your scanner. This creates a direct path for the diagnostic tool without modifying vehicle wiring permanently. Follow tool-specific prompts after connection to establish communication.

• Locate SGW (often in passenger kick panel, near glove box, or behind the radio)
• Unplug the SGW’s 12‑pin and 8‑pin connectors
• Plug the CTobd 12+8 cable into those two ports
• Connect the cable’s 16‑pin output to your scanner or OBD Bluetooth interface and start diagnostics

What diagnostics and functions become available once the SGW is bypassed?

With the gateway bypassed, compatible scanners can perform a wide array of diagnostics and service routines that are otherwise blocked, from basic trouble code reads to advanced calibration and coding tasks. Some features depend on your scanner model and installed software packages, so confirm tool compatibility for coding and ADAS work.

• Read and clear diagnostic trouble codes across vehicle systems
• Run active tests and view OEM live data streams
• TPMS OBDII relearn and service functions
• Coding/adaptation and ADAS calibration when using supported Maxisys tools and software

Who is this for: Automotive technicians, independent mechanics, and advanced DIYers working on FCA vehicles with Security Gateway Modules who need reliable access for diagnostics, programming and service tasks. The CTobd 12+8 lead is designed for use with compatible scanners and tablets (for example Maxisys MS906 series, MS908, DS808 family, X431 series, and various tablet/key programming tools), offering a non‑destructive, reversible way to restore scanner communication on affected Alfa Romeo, Chrysler, Dodge, Jeep, Fiat and Ram models.