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AsTools  |  SKU: A0181

Harley-Davidson 4-pin to 16-pin OBD2 Adapter Cable – Motorcycle

Regular price €995
Tax included

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The Harley-Davidson 4-pin to 16-pin OBD2 adapter cable is a specific adapter designed to establish a communication link between modern diagnostic equipment and Harley-Davidson motorcycles of older model years. Many Harley models, produced from around 2001 to 2013, are equipped with a 4-pin Deutsch-style diagnostic connector. This port is not directly compatible with the standardized 16-pin OBD2 plugs of contemporary scanners and interfaces.

This adapter cable functions as an indispensable bridge connecting the pins of the 4-pin port to the corresponding inputs on a 16-pin scan tool. This enables both the professional mechanic and the do-it-yourselfer to read the onboard computer of these motorcycles with a suitable, protocol-compatible scanner. The cable is robustly constructed to ensure reliability and durability.


Application and functionality:

The primary application of this cable is to enable electronic diagnostics. By using the adapter in combination with a scanner that supports Harley-Davidson's J1850 PWM protocol, the user can access the engine management system.

The functionality includes reading and clearing diagnostic trouble codes (DTCs) and, depending on the scan tool, viewing live data from sensors. This simplifies fault detection and performing maintenance.


Compatible with the following vehicle makes and models:

This adapter cable is compatible with a wide range of Harley-Davidson models equipped with the 4-pin diagnostic connector. This generally concerns models from around 2001 through 2013. Examples of compatible families:

  • Softail
  • Dyna
  • Sportster
  • Touring
  • V-Rod

It is strongly recommended to always check the physical connection on your own motorcycle before purchase.


Package Contents:

  • 1x Harley-Davidson 4-pin to 16-pin OBD2 adapter cable

Technical specifications:

Specification Description
Connector A Harley-Davidson / Deutsch 4-pin male connector
Connector B Standard 16-pin OBD2 (J1962) female connector
Cable type Passive adapter cable
Protocol support Suitable for J1850 PWM protocol (communication determined by scanner)
Cable length Approximately 20 to 30 cm (depending on manufacturer)

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