RED WOLF OBD2B to OBD1 Jumper Harness — 1998–2002 Honda/Acura Manual, Plug-and-Play

RED WOLF OBD2B to OBD1 conversion jumper harness lets you connect a 1992–1995 OBD1 ECU to a 1998–2002 Honda/Acura vehicle harness without cutting wires.

This plug-and-play adapter bridges the OBD2B style vehicle connector and an OBD1-spec ECU, enabling compatibility between later-model Honda/Acura wiring and earlier 1992–1995 OBD1 computers. Built with a molded ABS housing and high-conductivity copper cores, the harness is designed for reliable electrical contact and resistance to environmental wear. It’s intended for specific model years and transmission types — check compatibility carefully before ordering.

Which cars and ECUs will this harness work with?

The RED WOLF jumper harness supports select Honda and Acura models that use an OBD2B vehicle interface and older OBD1 ECUs. It was designed for manual-transmission systems and will not function if either the ECU or vehicle harness uses a different specification.

• Vehicle compatibility: Honda Accord (1998–2002), Civic (1999–2000), Acura Integra (2000–2001)
• ECU compatibility: 1992–1995 OBD1-spec computers only
• Transmission requirement: manual only (not compatible with automatic transmissions)
• Not suitable for OBD2A; only OBD2B vehicle harnesses apply

How easy is installation and what tools are needed?

Installation is straightforward thanks to the plug-and-play connectors—no splicing or soldering required. Simply plug the red connector into the vehicle’s OBD2B port and the gray connector into the OBD1 ECU; secure as needed and verify pin alignment before powering up.

• No wire cutting or modifications necessary for proper OBD1/OBD2B pin mating
• Basic hand tools recommended for routing and securing the harness only
• Check pinouts and grounding before first startup to avoid ECU damage
• Follow vehicle-specific installation guidelines when available

What are the build quality and electrical features?

The adapter uses pure copper conductor cores wrapped in PVC insulation housed inside an ABS-molded shell for durability. These materials offer corrosion resistance and maintain good electrical conductivity under typical under-dash conditions.

• ABS housing for impact and heat resistance
• Pure copper conductors for low-resistance signal transfer
• PVC insulation to resist abrasion and exposure in engine bays or cabin spaces
• Cable lengths and connector retention designed for secure, lasting fitment

Will this affect engine performance or diagnostics?

The harness is a passive wiring adapter that only maps the OBD2B vehicle harness to an OBD1 ECU pinout; it does not alter tuning, chip functions, or sensor operation. Diagnostic ability depends on whether the connected ECU and tools support the desired readouts and codes.

• No tuning or ECU modifications included — wiring adapter only
• Some diagnostic tools may be limited by OBD1 protocol differences
• Ensure sensors and grounds are intact to maintain accurate signals
• Compatibility varies by ECU model and vehicle wiring specifics

Who is this for: The RED WOLF OBD2B-to-OBD1 jumper harness is aimed at enthusiasts, technicians, and DIY mechanics who want to run a 1992–1995 OBD1 Honda ECU in specified 1998–2002 Honda or 2000–2001 Acura vehicles that use the OBD2B connector. It’s ideal for manual-transmission swaps, restoration projects, or those integrating an older ECU for specific tuning or component compatibility. Confirm both your vehicle’s harness type and the ECU’s OBD1 specification before purchase to ensure fitment and function.