Components

	AMP - TE Connectivity - 174917-6 48 Pin Connector AMP - TE Connectivity	x 1
	Conn Shrouded Header (4 Sides) HDR 40 POS 2.54mm Solder ST Top Entry Thru-Hole Bulk Samtec	x 1
	TLW-102-06-G-S Samtec Inc.	x 1
	TLW-103-06-G-S Samtec Inc.	x 1
	1N4732A-TAP VISHAY SEMICONDUCTORS	x 1

Tools, APP Software Used etc.

fritzing

Description

NA6 Miata to Speeduino v0.4.x Adapter Board Rev. C

This adapter board is designed to interface the stock NA6 (1990–1993 Mazda Miata) ECU connectors with a Speeduino v0.4.x board without requiring any modification to the vehicle’s factory wiring. It provides a clean, plug-and-play solution for DIY engine management enthusiasts who want to retain the original harness and connectors.

A 40-pin IDC ribbon cable is required to connect this adapter board to the Speeduino v0.4.x board.

Key Features:

Seamless integration between NA6 factory ECU connectors and Speeduino

No cutting, splicing, or modification of stock wiring

Compatible with Speeduino v0.4.x boards

Compact, easy-to-install design

Perfect for Miata tuners looking for a non-destructive way to install standalone engine management.

Schematic and Layout

Speeduino Hardware Repo

https://github.com/speeduino/Hardware

Download Gerbers Download BOM(Bill of materials)

May 31,2025

707 views

NA6 Miata to Speeduino v0.4.x Adapter Board Rev. C

Plug-and-play adapter board to connect NA6 Miata ECU connectors to Speeduino v0.4.x—no wiring mods needed.

707

Published: May 31,2025

Standard PCB

Download Gerber file 8

BOM(Bill of materials)

PCBWay Donate 10% cost To Author

Only PCB

PCB+Assembly

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Project images are for reference only. Actual production is based on the manufacturing files on the project page. Please review the designer's notes (e.g., PCB thickness) and select the appropriate options. PCBWay is not responsible for issues caused by unsuitable parameter selections.
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