Diag4 Bike Parallel Diagnostic System Adapter - 3x18 PIN Adapter — Harley-Davidson Softail Deluxe, Softail Fat Boy, Softail Fat Boy 114 (2018-2019)

Diag4 Bike parallel diagnostic adapter for motorcycle EFI modules, featuring a 3x18 PIN connector and breakout box for measuring fuel injection input and output signals on running engines. Allows real-time monitoring of all EFI connector pins without interrupting engine operation.

Features

• Parallel diagnostics for live EFI signal monitoring
• Wiring harness adapter with breakout box
• Clearly labeled monitoring points for all connector pins
• Measures input and output signals on running engines
• Non-invasive installation between EFI module and harness

Specifications

• Brand: Diag4 Bike
• Manufacturer Part #: AT 531 4080
• Connector Type: 3x18 PIN
• Length: 11.5 in
• Width: 7.25 in
• Height: 2.25 in
• Weight: 2.2 lbs
• Country of Origin: Czech Republic

Fitment

Designed to measure input and output signals from electronic fuel injection modules and related engine management systems on motorcycles.

Frequently Asked Questions

Can I use this while the engine is running?

Yes — the system is designed for parallel diagnostics on running engines without interrupting normal EFI function.

What's included in the box?

The adapter wiring harness and breakout box with labeled monitoring points for all EFI connector pins.

How do I install it?

Insert the breakout box between the EFI module and the motorcycle's wiring harness. The bike continues to operate normally during diagnostics.

Will this work on my specific motorcycle?

This adapter fits any motorcycle with a 3x18 PIN EFI connector. Verify your EFI module connector type before ordering.