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Ignitions and Electrical› Wiring Harnesses

HA Motorsports

ECU Jumper Harness

$93.50 $75.00 Save $18.50

SKU: OBD2A TO OBD1

In Stock
In Stock
Ships by Aug 1
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The HA Motorsports OBD2A to OBD1 ECU Jumper Harness provides a solution for integrating an OBD1 Engine Control Unit (ECU) into vehicles originally equipped with an OBD2A chassis. This harness is meticulously constructed using cross-linked automotive TXL wire, known for its durability and ability to exceed OEM specifications. It features all new OEM connectors, ensuring a secure and factory-like fitment during installation. This jumper harness is specifically designed for manual transmission vehicles and facilitates a painless conversion from an OBD2A ECU to an OBD1 ECU. It is compatible with the following models: * 1996-1999 Acura Integra with manual transmission * 1996-1998 Honda Civic with manual transmission * 1996-2001 Honda Prelude with manual transmission * 1996-1997 Honda Accord 4-cylinder with manual transmission HA Motorsports backs this product with a One Full-Year VIP Warranty, reflecting confidence in its quality and reliability. The harness is manufactured in the USA and supports essential functions such as the GSR IAB (secondary butterfly) function, with specific considerations for wiring polarity differences between OBD2 and OBD1 systems.

MIA's Description

The HA Motorsports OBD2A to OBD1 ECU Jumper Harness is designed for installing an OBD1 ECU into an OBD2A chassis. It uses all new OEM connectors for a quality fitment and is constructed with durable, cross-linked automotive TXL wire that exceeds OEM specifications. This harness allows for a straightforward conversion from an OBD2A ECU to an OBD1 ECU for manual transmission vehicles.

Fitment

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Specifications

BrandHA Motorsports
Part NumberOBD2A TO OBD1
CategoryIgnitions and Electrical

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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