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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Rywire
Rywire is a trusted name in performance automotive wiring, specializing in high-quality engine harnesses, tucked wiring solutions, and mil-spec connectors for tuner and race applications. Whether you're tackling a K-series swap, building a pro-touring classic, or refreshing a worn OEM harness, Rywire delivers plug-and-play reliability with meticulous craftsmanship.
- Engine harness conversions for popular chassis and swaps
- Tucked and shaved harnesses for a clean engine bay
- Mil-spec bulkhead connectors and accessories
- Customizable options to match your build's needs
Every harness is assembled in the USA using top-tier materials, ensuring factory-level fit and function. Browse the collection to find the right harness for your project.
84 products
84 products
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$35.00
The Rywire OBD2 10-pin to OBD2 8-pin Distributor Adapter (RY-DIS-2-2-10-PIN-8-PIN) provides a reliable, plug-and-play solution for integrating different OBD2 distributor configurations. This adapter is engineered to bridge a chassis harness using a 10-pin connector to a distributor featuring an 8-pin plug, ensuring seamless communication between the ignition system and the engine harness.
- Direct Plug-and-Play: Eliminates the need for cutting, soldering, or splicing factory wiring during installation.
- Professional Construction: Features high-quality automotive-grade wiring and precision pinning for consistent, interference-free signal delivery.
- OEM-Spec Connectors: Uses standardized 10-pin and 8-pin OBD2 housings for a secure, click-lock fit that resists vibration.
- MPN: RY-DIS-2-2-10-PIN-8-PIN
Avoid the risks of hand-crimped or poorly insulated harness modifications and ensure your ignition system receives a clean signal with this purpose-built adapter.
$35.00
The Rywire OBD2 8-Pin to OBD1 Distributor Adapter provides a reliable, plug-and-play solution for connecting an OBD1 distributor to a vehicle equipped with an OBD2 8-pin chassis harness. This conversion harness is a staple for Honda and Acura enthusiasts performing engine swaps or ignition system upgrades where maintaining wiring integrity is a priority.
By using this adapter, you avoid the need for cutting, pinning, or splicing into your factory engine harness, ensuring a clean installation that can be easily reversed if necessary. Built with high-grade materials and OEM-style connectors, it maintains signal continuity for critical ignition and RPM data.
- Function: Adapts an OBD2 8-pin chassis connector to an OBD1 distributor
- Installation: Direct plug-and-play jumper harness
- Build Quality: Professional-grade wiring with secure, weather-tight connectors
- Part Number: RY-DIS-2-1-8-PIN
$35.00
The Rywire OBD2 10-Pin to OBD1 Distributor Adapter (MPN: RY-DIS-2-1-10-PIN) provides a reliable, plug-and-play solution for engine swaps and ignition system conversions. This adapter bridges the gap between an OBD2 chassis harness equipped with a 10-pin distributor plug and an OBD1 distributor, eliminating the need for cutting, pinning, or splicing into the factory electrical system.
- Connects a 10-pin OBD2 chassis harness to an OBD1 distributor
- Plug-and-play installation preserves the integrity of the factory engine harness
- Constructed with OE-style connectors and high-grade automotive wiring for maximum conductivity
- Essential for specific Honda and Acura engine swaps and ignition upgrades
- Manufacturer Part Number: RY-DIS-2-1-10-PIN
$35.00
The Rywire OBD1 to OBD2 8-pin distributor adapter provides a reliable, plug-and-play solution for engine swaps and harness conversions. This jumper harness is specifically engineered to bridge the gap between an OBD1 engine harness and an OBD2 8-pin distributor, eliminating the need for cutting, splicing, or depinning factory connectors.
- Manufacturer Part Number: RY-DIS-1-2-8-PIN
- Compatibility: Connects OBD1 (1992-1995) engine harnesses to OBD2 8-pin distributors
- Construction: Built with high-quality automotive-grade wiring and OEM-style locking connectors
- Installation: Direct fitment with no modifications required to the factory wiring
- Reliability: Ensures consistent ignition signal and voltage for high-performance Honda and Acura applications
$35.00
The Rywire OBD1 to OBD2 10-pin distributor adapter provides a reliable, plug-and-play solution for connecting an OBD2 distributor to an OBD1 engine harness. This harness is a critical component for engine swaps or ignition system upgrades, allowing for a clean installation without the risks associated with cutting, splicing, or re-pinning the factory wiring loom.
- Converts OBD1 engine harness to accept an OBD2 10-pin distributor
- True plug-and-play design for a secure, professional installation
- High-quality terminals and connectors ensure a consistent ignition signal
- Maintains harness integrity by eliminating the need for wire soldering
- Manufacturer Part Number: RY-DIS-1-2-10-PIN
$35.00
The Rywire OBD0 to OBD1 Distributor Adapter provides a seamless plug-and-play solution for integrating an OBD1 distributor into an OBD0 chassis. This conversion harness is a critical component when performing an OBD1 ECU swap or engine conversion on late 1980s and early 1990s Honda or Acura models.
Constructed with high-quality automotive-grade wiring and durable OE-style connectors, this adapter allows for a direct connection without the need for cutting or splicing the factory wiring harness. It ensures a reliable, high-fidelity ignition signal to maintain precise timing and engine performance. This harness is designed for enthusiasts who prioritize a clean engine bay and a reversible installation process.
- Converts OBD0 chassis wiring to accept an OBD1 distributor
- Direct plug-and-play installation for a clean, secure connection
- Reduces the risk of wiring errors associated with manual splicing
- Manufacturer Part Number: RY-DIS-0-1
$250.00
Upgrade your ignition system with the Rywire Coil-on-Plug (COP) harness, specifically engineered for the Acura RSX and Honda S2000. This specialized wiring solution allows for the seamless integration of K-Series coils and is designed to work in conjunction with the T1 Trigger system when utilizing a non-OE, aftermarket standalone ECU.
- Direct integration for K-Series ignition coils on RSX and S2000 platforms
- Engineered for compatibility with T1 Cam Trigger systems
- Requirement: For use with aftermarket standalone ECUs only (Non-OE)
- High-quality loom and connectors for maximum signal integrity
- Manufacturer Part Number: RY-COP-RSX-S2000-COIL-T1
This harness provides a clean, professional wiring solution for high-performance builds requiring precise ignition timing and increased spark energy. It is an essential component for forced induction or high-compression setups where the factory ECU and ignition system are no longer sufficient.
$75.00
Fits Honda B-Series engines (B16, B17, B18, and B20) for Coil-On-Plug ignition conversions.
The Rywire Honda B-Series COP Adapter Plate is engineered for enthusiasts transitioning from traditional distributor-based ignition systems to modern Coil-On-Plug (COP) setups. This precision-machined plate provides a secure, stable mounting surface for individual ignition coils (such as K-Series coils), ensuring they remain seated properly over the spark plug tubes even under high-vibration or high-RPM conditions. By eliminating the need for traditional spark plug wires, this plate facilitates a cleaner engine bay and supports the more consistent spark delivery required for high-performance tuning.
- Manufacturer Part Number: RY-COP-PLATE-B-SERIES
- Material: High-grade billet aluminum for heat resistance and durability
- Compatibility: Designed for Honda B-Series valve covers (VTEC and non-VTEC variants)
- Installation: Bolts directly to existing valve cover mounting points for a factory-level fit
- Function: Essential for K-Series coil retrofitting on B-Series engines
$425.00
The Rywire RY-COP-IGBT Coil Sub-Harness provides a professional wiring solution for 2-rotor engines being upgraded to high-output IGBT "smart" coils. Specifically designed for use with AEM and IGN-1A style coils, this sub-harness eliminates the need for custom-pinned ignition looms, ensuring reliable signal delivery and high-voltage performance for your rotary ignition system.
- Engine Compatibility: 2-Rotor Rotary Engines
- Coil Compatibility: AEM / IGN-1A IGBT Smart Coils
- Facilitates clean Coil-on-Plug (COP) conversions
- High-temperature resistant wiring and automotive-grade connectors
- Manufacturer Part Number: RY-COP-IGBT
$225.00
The Rywire RY-COP-CPR-COIL harness is a specialized wiring solution designed for Honda and Acura owners converting to a Coil-On-Plug (COP) ignition system using the Hondata Coil Pack Retrofit (CPR) module. This harness provides the essential link between the CPR unit and the engine's coil sub-harness, replacing the aging distributor-based signal with a modern, high-output ignition configuration.
- Engineered exclusively for use with Hondata ECUs and the Hondata CPR module
- Built with professional-grade, high-temperature looming for superior engine bay durability
- Provides a clean, plug-and-play interface for Rywire COP sub-harnesses
- Ideal for high-RPM or boosted B-series, D-series, and H-series engines requiring precise ignition control
- Manufacturer Part Number: RY-COP-CPR-COIL
$65.00
Streamline your engine bay and improve pedal response with the Rywire Honda K-Series Hydraulic Clutch Line (RY-CLUTCH-LINE-K). Designed specifically for Honda K-Series (K20/K24) applications and swaps, this single-piece line replaces the complex factory hardline and rubber hose assembly, providing a direct connection from the clutch master cylinder to the slave cylinder.
- Direct fit for Honda K-Series engine swaps and configurations.
- High-pressure braided stainless steel construction eliminates line expansion for more consistent clutch engagement.
- Simplifies engine bay aesthetics by bypassing bulky OEM hardlines.
- Engineered for high-heat environments and long-term durability.
- Manufacturer Part Number: RY-CLUTCH-LINE-K
$85.00
Ensure reliable power delivery for your engine swap or build with the Rywire Honda K-Series Charge Harness. This specialized electrical harness replaces the bulky factory charging circuit with a streamlined, high-performance solution. It provides the critical connections between your alternator, starter, and the battery or fuse box, ensuring consistent voltage and dependable starting performance.
Constructed with high-grade, heat-resistant wiring and durable connectors, this harness is built to withstand the rigors of high-performance engine bays while offering a significantly cleaner look than OEM or DIY wiring. It is a vital component for anyone looking to eliminate charging issues and simplify their electrical system during a K-Series swap.
- Designed for Honda K-Series engine configurations
- Provides direct paths for alternator and starter power circuits
- High-quality materials for maximum conductivity and heat resistance
- Simplifies engine bay aesthetics by eliminating redundant factory wiring
- Manufacturer Part Number: RY-CHARGE-HARNESS-K
$85.00
Fits Honda B-Series and D-Series engines.
The Rywire Honda B/D-Series Charge Harness (RY-CHARGE-HARNESS-B) provides a high-conductivity, reliable connection for your vehicle's charging system. This harness is engineered to replace aged, brittle factory wiring that can lead to voltage drops or inconsistent charging, ensuring your alternator and starter receive the clean power they require.
Built to handle the heat and vibration of a performance engine bay, this harness is a favorite for enthusiasts performing engine swaps or wire tucks. By replacing the bulky original charging circuit, you gain a cleaner aesthetic and more reliable electrical paths for your Honda B or D-series build.
- Compatible with Honda B-Series and D-Series engine platforms
- High-quality wiring and connectors for maximum conductivity
- Reduces electrical resistance compared to worn OEM harnesses
- Designed for easy integration with tucked or modified engine bays
- Manufacturer Part Number: RY-CHARGE-HARNESS-B
$599.00
Fits 1992-1995 Honda Civic with B-Series engine swaps and 1994-2001 Acura Integra LHD models.
The Rywire RY-B2-OEM engine harness provides a clean, professional solution for replacing aged, brittle, or improperly modified factory wiring. Designed specifically for B-Series engines in the EG Civic and DC Integra chassis, this harness restores electrical integrity to your engine management system. This is a direct OEM-style replacement harness intended for Left-Hand Drive (LHD) vehicles only, ensuring proper reach and connector placement across the firewall.
- Direct OEM replacement for the factory engine harness
- Correctly pinned for B-Series engine configurations
- Compatible with 1992-1995 Civic (EG) and 1994-2001 Integra (DC)
- Built with high-quality connectors and loom for maximum durability
- LHD (Left-Hand Drive) chassis specific fitment
- Manufacturer Part Number: RY-B2-OEM
$549.00
Fits select Honda B-series engines utilizing 1992-1995 (OBD1) chassis configurations.
The Rywire B-Series OBD2 Tucked Budget Engine Harness (RY-B2-BASE) is engineered for builders seeking a cleaner engine bay aesthetic without the expense of a full Mil-Spec loom. This harness provides a "tucked" layout, routing wires away from the top of the valve cover to showcase the engine, while maintaining high-quality electrical connectivity for critical systems.
- Configuration: Designed for engines using OBD2 distributors, injectors, and alternators.
- ECU Interface: Features 1992-1995 (OBD1) ECU plugs for direct integration with early 90s Honda/Acura electronics.
- Installation Requirement: Requires a chassis adapter for installation to the factory interior wiring.
- Design: Simplified tucked routing for a professional look.
- Part Number: RY-B2-BASE
Constructed to replace brittle, aged factory wiring, this Rywire harness ensures consistent signal delivery to your injectors and ignition components, solving common intermittent wiring issues found in older chassis.
$549.00
The Rywire B-Series and D-Series OBD1 Tucked Budget Engine Harness (RY-B1-BASE) is engineered for enthusiasts seeking a clean engine bay aesthetic without the complexity of a custom mil-spec loom. This harness relocates unsightly wiring for a "tucked" look while maintaining reliable electrical connectivity for high-performance street and track builds.
Designed for compatibility with OBD1 components, this harness features integrated connectors for the distributor, injectors, and alternator. It utilizes standard 92-95 (OBD1) ECU plugs, making it a direct solution for Honda's golden-era engine management systems. This harness replaces brittle, decades-old factory wiring with a simplified layout for easier engine maintenance and troubleshooting.
- Manufacturer Part Number: RY-B1-BASE
- Engine Compatibility: Honda B-Series and D-Series
- Connector Type: OBD1 Distributor, Injectors, and Alternator
- ECU Interface: 1992-1995 OBD1 style plugs
- Installation Requirement: Requires a chassis-specific adapter for full vehicle integration.
$85.00
The Rywire Flying Lead Race Adapter (RY-B-SUB-FLY) provides a universal solution for integrating a Rywire B, D, or H-Series engine harness into a custom race chassis or non-standard vehicle. This sub-harness adapter eliminates the need for chassis-specific plugs, offering open "flying leads" that can be hard-wired directly into your power distribution module (PDM), fuse block, or custom switch panel.
- Universal Integration: Designed to mate Rywire B/D/H-series engine harnesses to any custom chassis wiring setup.
- Labeled Leads: Each wire is clearly identified to streamline the installation process and ensure accurate signal routing for power, ground, and ignition triggers.
- Race-Grade Construction: Built with high-quality automotive-grade wiring to withstand the vibrations and thermal demands of a motorsport environment.
- Manufacturer Part Number: RY-B-SUB-FLY
Whether you are building a dedicated track car with a simplified electrical system or performing a swap into a chassis without a pre-made Rywire adapter, this flying lead harness provides the professional connection points required for a clean and reliable install.
$100.00
Fits 1999-2000 Honda Civic models with the "2B" chassis-side connector configuration. The Rywire chassis-specific adapter (RY-B-SUB-EK-2B) provides a professional, plug-and-play solution for integrating your engine harness into the factory chassis electrical system. Specifically designed for late-model EK chassis, this adapter eliminates the need for manual wire-tapping or custom pinning, ensuring a clean and reliable connection that maintains signal integrity for sensitive electronics.
- Engineered specifically for 1999-2000 Honda Civic (OBD2b) chassis platforms
- Direct-fit interface for chassis-to-harness connections
- High-grade wiring and OE-style connectors for maximum durability and heat resistance
- Simplifies complex wiring for engine swaps and aftermarket harness upgrades
- Manufacturer Part Number: RY-B-SUB-EK-2B
$100.00
Fits 2000-2001 Acura Integra.
The Rywire Chassis Specific Adapter (2B) is a specialized wiring solution designed to bridge the gap between your engine harness and the factory chassis wiring. Built to meet the needs of late-model DC2 owners, this adapter ensures a clean, professional integration without the need for destructive wire splicing or pin-out modifications. It is an essential component for those performing engine swaps or harness replacements who demand electrical reliability and a factory-standard finish.
- Specifically engineered for the 2000-2001 Acura Integra (OBD2B) chassis
- High-quality automotive-grade connectors for secure, vibration-resistant fitment
- Simplifies the connection between engine and cabin electronics
- Durable looming for heat and abrasion resistance
- Manufacturer Part Number: RY-B-SUB-EG-2B
$100.00
Fits 1990-1991 Honda Civic and CRX (DX and STD trim levels).
The Rywire chassis-specific adapter is an essential component for EF enthusiasts performing engine swaps or wiring refreshes. Designed specifically for the late-model 1990-1991 DX and Standard (STD) trim chassis, this adapter ensures a clean, reliable interface between the vehicle's cabin harness and the engine harness. By utilizing high-grade automotive-spec wiring and factory-style connectors, this sub-harness eliminates the need for messy wire splicing and potential failure points.
- Direct fit for 1990-1991 Honda Civic/CRX DX/STD chassis
- High-quality automotive grade wiring and loom
- Precision-engineered connectors for a secure, moisture-resistant fit
- Streamlines engine swap wiring and electrical troubleshooting
- Manufacturer Part Number: RY-B-SUB-EF-DX-LATE
$100.00
Fits 1988-1989 Honda Civic and CRX DX or STD trim models.
The Rywire RY-B-SUB-EF-DX-EARLY Chassis Specific Adapter is a professional wiring solution for early EF chassis owners performing engine swaps. This adapter facilitates a clean, reliable connection between an updated engine harness and the factory vehicle cabin harness, specifically for vehicles originally equipped with Dual Point Fuel Injection (DPFI).
- Specifically designed for 1988-1989 Honda Civic and CRX (DX/STD trims).
- Ensures proper pin-to-pin continuity for critical engine and chassis signals.
- Constructed with high-grade automotive-spec connectors and wiring.
- Eliminates the need for destructive cutting or splicing of the factory dash harness.
- Manufacturer Part Number: RY-B-SUB-EF-DX-EARLY
$100.00
Fits 1988-1991 Honda Civic and CRX (Si, HF, and EX models).
The Rywire Chassis Specific Adapter (RY-B-SUB-EF) is a precision-engineered wiring solution designed to bridge the connection between your engine harness and the factory chassis harness. Specifically tailored for the EF-generation Honda Civic and CRX, this adapter eliminates the need for tedious manual repinning or cutting into your vehicle's factory wiring during engine swaps or harness replacements.
- Direct plug-and-play interface for Si, HF, and EX chassis.
- Uses high-quality OE-spec connectors for a secure, vibration-resistant fit.
- Simplifies engine swap wiring by maintaining clean, factory-like integration.
- Designed for durability in high-performance automotive environments.
- Manufacturer Part Number: RY-B-SUB-EF
$35.00
The Rywire Alternator Adapter (RY-ALT-OBD1-OBD2) offers a reliable, plug-and-play solution for converting your vehicle's charging system. This jumper harness allows you to install a newer OBD2 alternator into a chassis originally wired for OBD0 or OBD1 configurations without the need for permanent modifications to your factory electrical system.
- Application: Adapts OBD0 or OBD1 chassis harness to an OBD2-style alternator plug
- Installation: Full plug-and-play design requires no cutting, stripping, or soldering of wires
- Construction: Built with high-quality automotive-grade connectors and terminals to ensure a secure electrical connection
- Reliability: Maintains charging system integrity by using professional-grade pinning and loom
- MPN: RY-ALT-OBD1-OBD2
By using this Rywire adapter, you ensure a clean installation for engine swaps or alternator upgrades, providing a secure connection that withstands the heat and vibration of the engine bay.
$1,249.00
The Rywire 13B Mil-Spec Engine Harness (MPN: RY-13B-HALTECH) provides a professional-grade wiring solution for high-performance 13B rotary engines running Haltech engine management. Constructed using high-temperature Tefzel wire and genuine Raychem heatshrink, this harness is built to withstand the extreme heat cycles of a rotary engine bay while maintaining superior electrical signal integrity.
- Designed specifically for Haltech ECU platforms
- Configured for EV14 primary injectors and Denso 5th/6th secondary injectors
- Pre-wired for Delphi pressure sensors and Bosch knock sensors
- Mil-Spec wiring standards for maximum durability and weight reduction
- Note: This harness requires the RY-13B-SUB-FD sub-harness for installation
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