When upgrading or replacing your engine harness, especially for performance builds, understanding the Obd2 Alternator Pinout is crucial. Rywire Engine Harnesses offer a streamlined solution for engine swaps and custom wiring, and this guide will help you understand how our harnesses integrate with your OBD2 alternator system.
Rywire Engine Harnesses are designed for enthusiasts and professionals seeking high-quality, reliable wiring solutions. Our budget-friendly D-series and B-series compatible wire-tuck engine harnesses mirror our Mil-spec line in quality, differing mainly in wire color and loom type. We provide a range of options to precisely meet your needs, ensuring you get the correct components for your specific project.
All Rywire harnesses utilize new connectors and materials, crimped with precision pneumatic heads for an OEM-grade connection every time. Each connector is tagged for straightforward installation, and circuits prone to interference are properly shielded and grounded. Every harness undergoes 100% pin-to-pin quality testing and resistance checks to eliminate voltage fluctuations, guaranteeing performance and reliability.
OBD2 Alternator Integration with Rywire Harnesses
Rywire engine harnesses are built with OBD1 (92-95) computer connectors. For those using OBD2a or OBD2b computers, an adapter is necessary. It’s important to note that our harnesses are not compatible with USDM OBD2 computers. However, aftermarket computers with OBD2 plugs and non-US OBD2 computers are compatible, with the exception of H22 and GSR stock computers.
Each Rywire harness includes a custom back side sub-harness tailored to your chosen chassis. This modular design means that if you switch chassis in the future, you’ll only need a new sub-harness, not an entirely new wiring loom. This adds significant value and flexibility to your investment.
Key Connector Highlights
Our harnesses come equipped with connectors for all essential engine components, including specific attention to OBD2 compatibility where relevant. Notably, this includes an OBD2 Alternator Plug type to ensure seamless connection to your alternator. Furthermore, the harness is designed to accommodate OBD2 Injectors 1-4 and an OBD2 10-pin Distributor plug, reflecting its modern engine management system compatibility.
Here’s a comprehensive list of connectors included with our engine harnesses:
| Connector Type | Function | OBD Compatibility |
|---|---|---|
| Oil Pressure Sending Unit | Measures engine oil pressure | OBD2 Compatible |
| Knock Sensor | Detects engine knocking | OBD2 Compatible |
| Intake Air Temperature (Manifold) | Measures intake air temperature | OBD2 Compatible |
| Oxygen Sensor (Primary 4 Wire) | Monitors exhaust oxygen levels | OBD2 Compatible |
| OBD2 Alternator Plug type | Connects to OBD2 Alternator | OBD2 Specific |
| 2 Extra Wires | For custom or additional sensors | Flexible |
| OBD2 Injectors 1-4 | Connects to OBD2 Injectors | OBD2 Specific |
| MAP Sensor | Measures manifold absolute pressure | OBD2 Compatible |
| TPS (Throttle Position Sensor) | Measures throttle position | OBD2 Compatible |
| Idle Control Motor | Controls idle speed | OBD2 Compatible |
| Electronic Speed Sensor | Measures vehicle speed | OBD2 Compatible |
| Ground | Essential ground connection | Universal |
| Fan Switch | Controls radiator fan | OBD2 Compatible |
| OBD2 10-pin Distributor plug | Connects to OBD2 Distributor | OBD2 Specific |
| h20 Sending Unit (Gauge Cluster) | Sends coolant temp to gauge | OBD2 Compatible |
| Reverse Lights | Connects reverse lights | Universal |
| Engine Coolant Temp | Measures engine coolant temperature | OBD2 Compatible |
| Starter Signal | Triggers starter motor | Universal |
| VTEC Solenoid | Controls VTEC engagement | OBD2 Compatible |
| OBD1 Computer Plugs A,B,D | Connects to OBD1 ECU | OBD1 Specific |
| Power Distribution Cap | Distributes power to systems | Universal |
Installation and Compatibility Guides
To assist with your installation, we provide detailed instructions for various chassis types. These guides are designed to be vehicle-specific, ensuring a smooth and correct installation process. Please find the instruction links below, categorized by chassis type:
- 88-91 CRX/Civic: Rywire Instructions 88-91 EF Chassis Adapter (PDF)
- 90-91 Integra DA: Rywire Instructions 90-91 DA Chassis Adapter (PDF)
- 92-95 Civic & 92-95 Integra: Rywire Instructions 92-95 EG_DC-92-93 Chassis Adapter (PDF)
- OBD2a Vehicles: Rywire Instructions OBD2a Chassis Adapter (PDF)
- OBD2b Vehicles: Rywire Instructions OBD2b Chassis Adapter (PDF)
Warranty and Guarantee
Rywire Engine Harnesses are warrantied and guaranteed to function correctly. While these harnesses are non-refundable, the modular design allows for chassis changes by simply swapping the sub-harness. For previous customers needing replacement sub-harnesses, please contact us directly.
Conclusion
Choosing a Rywire Engine Harness means investing in quality, compatibility, and ease of installation for your engine wiring needs. Understanding the OBD2 alternator pinout and how our harnesses are designed to integrate with these systems is key to a successful installation. Explore our range of harnesses and experience the Rywire difference in your next automotive project.
