Autel OBD2 12+8 Adapter for Chrysler FCA vehicles — SGW bypass cable with 16‑pin diagnostic pass‑through

The Autel 12+8 OBD2 adapter is a Chrysler-specific security gateway bypass cable that lets your OBD2 scanner communicate directly with 2018-and-newer FCA vehicles.

If your Chrysler, Dodge, Jeep, Fiat or Alfa Romeo from 2018 onward blocks standard OBD2 requests because of the FCA Security Gateway (SGW), this Autel 12+8 cable provides a straightforward hardware bypass so diagnostic tools can access modules and run full system checks. It’s a passive wiring adapter that plugs into the SGW connectors and routes signals to a standard 16‑pin OBD2 interface or Bluetooth diagnostic dongle, enabling advanced diagnostics and service functions that are otherwise restricted.

How does the Autel 12+8 cable let my scanner work on SGW‑protected vehicles?

The cable connects directly to the SGW module’s two factory connectors (12‑pin and 8‑pin) and reroutes the vehicle’s bus to a conventional 16‑pin OBD2 port. This bypass removes the SGW’s protocol gate so your scanner can exchange diagnostic messages with ECUs the gateway might otherwise block.

• Plugs into the SGW’s 12‑pin and 8‑pin connectors for a direct connection
• Terminates in a standard 16‑pin OBD2 socket compatible with scanners and Bluetooth dongles
• Passive wiring — no programming or power changes required

Which cars and diagnostic tools are compatible with this adapter?

Designed specifically for FCA vehicles with the Security Gateway introduced around 2018, the adapter supports Chrysler, Dodge, Jeep, Fiat and Alfa Romeo models that use the 12+8 SGW configuration. It is agnostic to the scanner brand — any OBD2‑capable tool that speaks the vehicle’s bus protocols can be used once the adapter is installed.

• Compatible with 2018 and later FCA vehicles that have the 12+8 SGW connectors
• Works with virtually all OBD2 scanners and Bluetooth dongles
• Allows full system diagnostics, service functions, and code reading/clearing where supported by the scanner

What are the steps to install the 12+8 SGW bypass cable?

Installation is simple and reversible when performed carefully. You locate the SGW module, unplug its factory 12‑pin and 8‑pin connectors, connect those two connectors to the adapter’s matching ports, then plug a scanner or Bluetooth interface into the adapter’s 16‑pin OBD2 socket.

• Find and unplug the SGW’s 12‑pin and 8‑pin connectors
• Connect each SGW connector to the matching 12+8 ports on the Autel adapter
• Attach your 16‑pin OBD2 cable or Bluetooth dongle to the adapter and power on your scanner

What support and warranty does Autel provide for this adapter?

Autel backs the 12+8 OBD2 adapter with a one‑year warranty and a 30‑day return window. If you encounter fitment questions or communication issues, Autel’s support channel via auteldirect@outlook.com is available for troubleshooting and replacement guidance.

• 1‑year limited warranty included
• 30‑day no‑reason returns policy
• Email support with typically prompt responses for setup help

Who is this for? Technicians, independent mechanics, and DIY vehicle owners who service FCA vehicles with SGW restrictions will find this Autel adapter useful when their scanner cannot access control modules through the vehicle’s secured gateway. It’s intended for diagnostic use by people comfortable locating and temporarily disconnecting the SGW connectors; it’s not a permanent modification and should be used following manufacturer and safety guidance.