SpeedFactory OBD2A to OBD1 ECU Jumper Harness for 96-98 Honda

SpeedFactory OBD2A to OBD1 ECU Jumper Harness - SFR-01-041

Running an OBD1 ECU in a 1996-1998 Honda or Acura? This is the harness that makes it happen cleanly. The SpeedFactory OBD2A to OBD1 ECU Jumper Harness (SFR-01-041 / SF-01-041) lets you drop in a 1992-1995 Honda/Acura manual transmission ECU into any OBD2A chassis without cutting a single wire. It's the go-to solution for anyone swapping in a chipped OBD1 ECU for tuning on a B-series or H-series build.

Fits 1996-1998 Honda Civic, 1996-1998 Acura Integra, 1996-1998 Honda Prelude, 1996-1998 Honda Accord, 1997-1998 Honda CR-V, and 1996-1997 Honda Del Sol - all OBD2A platforms that need this adapter to run an OBD1 ECU. Manual transmission ECU required.

Why This Harness Works

SpeedFactory built this with OEM-style ECU pin connections on every plug - no loose fits, no signal loss. The leads run 7 inches extended, which gives you real routing flexibility inside a tight engine bay. Wire gauge and insulation exceed factory spec, so it holds up under heat and vibration long-term. This is not a generic adapter - it's purpose-built for OBD2A-to-OBD1 conversion on Honda and Acura platforms.

Key Features

• Enables OBD1 Honda/Acura manual transmission ECU use in OBD2A chassis (1996-1998)
• Compatible with Civic, Integra, Prelude, Accord, CR-V, and Del Sol OBD2A models
• OEM-style ECU pin connections on all plugs - no signal integrity issues
• 7-inch extended leads for flexible routing in the engine bay
• Automotive-grade wire exceeding OEM wire spec for heat and abrasion resistance
• True plug-and-play - no cutting, splicing, or soldering required
• SKU: SFR-01-041 (also listed as SF-01-041)

Common Use Cases

• Running a chipped OBD1 P28, P30, or P72 ECU in a 96-98 Civic or Integra
• Engine swaps where the donor ECU is OBD1 but the chassis is OBD2A
• Hondata, Crome, or Neptune ECU tuning setups on OBD2A vehicles
• Keeping factory OBD2A engine harness intact while using an aftermarket OBD1 ECU

Installation

Plug the OBD1 side of the harness into your OBD1 ECU, then connect the OBD2A side to your factory chassis harness. No modifications to your vehicle's wiring are needed. The extended leads give you room to route the harness cleanly to the ECU location. Confirm your ECU is a manual transmission unit before ordering - automatic ECUs are not compatible with this harness.