Rywire Honda B-Series Mil-Spec Eng Harness w/OBD2 Dist/Inj/Alt & OBD1 92-95 ECU Plugs (Adapter Req)

If you're swapping a Honda B-series engine into a chassis that didn't originally come with one, or if you're rebuilding a B-series setup and need a clean, reliable wiring solution, this Rywire Mil-Spec engine harness is a solid choice. It's built to handle the demands of a performance engine bay, ensuring all your critical engine functions get the right signals. This harness is designed to integrate your OBD2 distributor, fuel injectors, and alternator with an OBD1 ECU, which is a common setup for many B-series builds aiming for broader ECU tuning options.

Rywire uses Mil-Spec connectors and high-quality wire for this harness, which means you're getting a well-built component that's resistant to heat and vibration. This is important because engine bay wiring takes a beating, and using durable materials helps prevent future electrical gremlins. The harness is laid out to simplify installation, with clearly labeled connectors for each component. Keep in mind that while it has OBD1 ECU plugs, you'll need an adapter harness if you're using a 1992-1995 ECU, as the pinouts differ from later OBD1 models.

This harness is a significant upgrade over factory wiring for custom builds, offering a cleaner look and improved reliability. It's designed to work with most B-series engine swaps, but always double-check your specific ECU and chassis combination to ensure compatibility. If you're building a performance Honda, a quality engine harness like this is a foundational piece that makes the rest of your electrical system work correctly.