SpeedFactory OBD1 to OBD2A Reverse ECU Jumper Harness

OBD1 to OBD2A Reverse ECU Jumper Harness for 92-95 Honda & Acura

Running an OBD2A ECU in a 92-95 Honda or Acura chassis? This is the harness that makes it plug-and-play. SpeedFactory's SFR-01-040 reverse jumper harness bridges your OBD1 vehicle wiring to an OBD2A ECU without cutting, splicing, or fabricating anything. Bolt in your ECU, plug in the harness, and go.

The conversion direction here is OBD1 chassis to OBD2A ECU - which is the setup most swap builders run when they want access to JDM OBD2A tuning options (P72, P61, P30, etc.) inside an EG Civic, DC/DB Integra, or similar platform. OBD2A ECUs are widely available, well-supported by tuners, and often the preferred target for budget-friendly and high-output builds alike. This harness removes the wiring headache from the equation entirely.

Fits These Vehicles:

• 1992-1995 Honda Civic (EG chassis)
• 1992-1995 Acura Integra (DC/DB chassis)
• 1992-1995 Honda Accord (4-cylinder)
• 1992-1995 Honda Prelude
• 1993-1995 Honda Del Sol

What Makes This Harness Worth Using:

SpeedFactory built this with OEM-style ECU pin connections so the fit is solid - no loose connectors, no wiggle, no intermittent codes from a bad pin seat. The leads run 7 inches, which gives you enough slack to route cleanly through the firewall without stress on the connectors. The wire itself is automotive-grade and built to handle the heat and vibration of a real engine bay, not a test bench. This is the same level of quality SpeedFactory brings to their racing and performance products - just applied to a harness that needs to work every time, not just on install day.

Installation Notes:

• JDM OBD2A ECU: Plug one side into the OBD2A ECU, the other into your factory OBD1 chassis harness. No additional parts needed.
• USDM OBD2A ECU: Requires a secondary 4-wire oxygen sensor in addition to this harness.

If you're building a swap, chasing tuning flexibility, or just need a cleaner ECU solution in your EG or EF chassis, the SFR-01-040 is the straightforward answer. No cutting, no guessing - just a harness that fits and works.