Data Communication Module - J1850

Part Number 309-454

Simplify your tuning setup with the ThunderMax Data Communication Module for J1850 systems. This module provides a clean, accessible connection point between your ThunderMax ECM and your tuning software—perfect for bikes where the factory communication port is tough to reach. Built for reliability and ease of use, it keeps your data link solid during tuning, diagnostics, and firmware updates.

Key Features:

Designed for motorcycles using the J1850 serial communication protocol.

Provides a remote communication link to the ThunderMax module when the standard port is obstructed or inaccessible.

Plug-and-play installation for quick setup and dependable connectivity.

Compatible with Harley-Davidson® models equipped with J1850 harnesses and ThunderMax tuners.

Compatibility & Install Notes:

Use when the stock communication port is difficult to access for tuning or diagnostics.

Confirm your motorcycle’s wiring harness uses the J1850 protocol before installation.

Route and secure wiring to avoid heat, pinch points, and moving components.