Rywire offers budget-friendly engine harnesses for various Honda models, including D-series and B-series engines. These harnesses, similar to their Mil-spec counterparts, feature a single black wire color and expandable loom. Choosing the right harness is crucial, so understanding compatibility is key. This article explains the key features of Rywire harnesses and guides you on adapting them for different OBD systems.
Understanding Rywire Engine Harness Compatibility
Rywire harnesses are meticulously crafted with new connectors and materials. Each connection is pneumatically crimped for OEM-level reliability and labeled for easy identification. Crucially, these harnesses are designed with OBD1 (92-95) computer connectors. This means using an adapter is essential when working with OBD2a or OBD2b computers. Note: These harnesses are not compatible with USDM OBD2 computers. However, they do work with aftermarket computers using OBD2 plugs and Non-US OBD2 computers (excluding stock H22 and GSR computers).
Key Features and Adaptability
A standout feature of Rywire harnesses is the custom sub-harness designed for specific chassis. This allows for easy swapping between chassis by simply changing the sub-harness instead of the entire loom. While the harnesses are guaranteed to function correctly, they are non-refundable. The separable back-side harness (interior/shock tower connection) enables compatibility with multiple chassis, as long as the engine components remain consistent. Existing customers can purchase replacement sub-harnesses separately by contacting Rywire directly.
Harness Connector List and Documentation
Rywire harnesses include a comprehensive array of connectors, covering essential engine components:
- Oil Pressure Sending Unit
- Knock Sensor
- Intake Air Temperature (Intake Manifold Style)
- Oxygen Sensor (Primary 4 Wire)
- OBD2 Alternator Plug Type
- 2 Extra Wires
- OBD2 Injectors 1-4
- MAP Sensor
- TPS (Throttle Position)
- Idle Control Motor
- Electronic Speed Sensor
- Ground
- Fan Switch
- OBD2 10-pin Distributor Plug
- H20 Sending Unit (for Gauge Cluster)
- Reverse Lights
- Engine Coolant Temp
- Starter Signal
- VTEC Solenoid
- OBD1 Computer Plugs A, B, D
- Power Distribution Cap
Rywire provides detailed chassis adapter instructions for various Honda models and OBD systems. These PDFs guide users through the installation process for specific vehicle types, ensuring proper connection and functionality. Download the appropriate guide for your specific application:
- 88-91 CRX/Civic: 88-91 CRX/Civic Chassis Adapter Instructions
- 90-91 Integra DA: 90-91 Integra DA Chassis Adapter Instructions
- 92-95 Civic & 92-95 Integra: 92-95 Civic & Integra Chassis Adapter Instructions
- OBD2a Vehicles: OBD2a Chassis Adapter Instructions
- OBD2b Vehicles: OBD2b Chassis Adapter Instructions
Conclusion
While Rywire harnesses come equipped with OBD1 connectors, understanding compatibility and utilizing the correct adapter opens up possibilities for various Honda models and engine swaps. Referencing the comprehensive connector list and downloading the appropriate chassis adapter instructions will streamline the installation process. Remember to contact Rywire directly for specific compatibility questions or to purchase a replacement sub-harness.
