Rywire 02-04 Honda K-Series Mil-Spec Engine Harness w/Chassis Specific Adapter — a purpose-built wiring solution for 2002–2004 Honda K-Series engine installations. This harness pairs mil-spec materials with a chassis-specific adapter to simplify K-series swaps and custom installs.

Built to meet higher durability and organization needs, the Rywire mil-spec harness reduces time and uncertainty during engine conversions. It combines robust connectors and routed looms with clear circuit labeling so installers and enthusiasts can identify and manage connections more efficiently. The included chassis-specific adapter allows the engine harness to interface with the vehicle wiring harness for a cleaner, more practical installation while preserving serviceability.

Features

• Mil-spec wiring construction for durability and consistent performance
• Chassis-specific adapter included for direct integration with 02–04 vehicle harnesses
• Pre-terminated, labeled connectors to speed installation and reduce wiring errors
• Protective sleeving and routed loom for organized routing and abrasion resistance
• Designed for K-Series engine swaps and custom engine bay builds

This harness is a practical choice for enthusiasts performing a K-Series swap or upgrading wiring for reliability and clarity. It helps keep the engine bay organized, reduces fabrication time, and supports a professional installation approach without guessing which wire goes where.

If you have questions or want help choosing the right harness for your project, call us directly — we’re happy to advise: 512-982-9393 (TX) or 562-981-6800 (CA). We have two locations in Austin, Texas and the Los Angeles, California area where we offer installation and customization services.

If you are considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov