Ignitions and Electrical› Wiring Harnesses

HA Motorsports

OBD1 to OBD2B ECU Jumper Harness

$75.00

SKU: OBD2B TO OBD1

In Stock
In Stock
Ships by Jul 31
Free Shipping over $100
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The HA Motorsports OBD1 to OBD2B ECU Jumper Harness facilitates the conversion of an OBD1 vehicle to accommodate an OBD2B USDM ECU. Constructed with high-durability, cross-linked automotive TXL wire that surpasses OEM standards, this harness ensures reliable performance and longevity. Designed and built in the USA, this jumper harness utilizes all new OEM ECU connectors, guaranteeing OE-quality fitment. It is engineered for installing an OBD2B USDM manual transmission ECU into specific vehicle models, including: * 92-95 Honda Civic with manual transmission * 92-95 Honda Del Sol with manual transmission * 92-95 Acura Integra with manual transmission * 90-95 Honda Accord 4-cylinder with manual transmission * 92-95 Honda Prelude with manual transmission The harness also provides specific wiring guidance for the secondary O2 sensor pigtail, detailing connections for heater control, power, ground, and signal input. Furthermore, this product comes with a One Full-Year VIP Warranty, reflecting HA Motorsports' commitment to quality and customer support. It also includes pre-wired CKF bypass for seamless integration.

MIA's Description

The HA Motorsports OBD1 to OBD2B ECU Jumper Harness is designed for converting an OBD1 vehicle to utilize an OBD2B USDM ECU. It is constructed with cross-linked automotive TXL wire, which exceeds OEM specifications for durability. The harness features all new OEM ECU connectors to ensure OE quality fitment.

This jumper harness is specifically for installing an OBD2B USDM manual transmission ECU into compatible vehicles, including various Honda Civic, Del Sol, Acura Integra, Honda Accord (4-cylinder), and Honda Prelude models from the early to mid-1990s. It also includes detailed wiring information for the secondary O2 sensor pigtail.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandHA Motorsports
Part NumberOBD2B 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.

View Full Return Policy