Rywire B-Series Swap Engine Harness for Haltech Nexus S2/S3/R3, 4 Injector (B-Haltech-NA)

Rywire B-Haltech-NA is the four-injector Haltech harness for B-series swaps that do not need a secondary injector bank or exhaust back pressure sensing but still want AEM oil, fuel and air sensors, powered CAN and room to expand. The sensors, coils and injectors plug straight in, the AUX and CAN ports leave room for flex fuel, drive-by-wire or extra sensors later, and the interior side is a separate chassis adapter.

Why This B-Series Swap Harness for Your Haltech Nexus Build

Rywire B-Haltech-NA is a pre-terminated B-series swap harness for the Haltech Nexus S2, S3 or R3: the B-series sensors, coils and 4 injectors plug in, and a separate chassis adapter connects it to your car.

• Versus re-pinning your factory Honda harness: This Rywire B-Series Haltech Nexus 4-injector harness is built for the Haltech plug, with wideband, CAN and AEM sensors wired in; factory harnesses suit Honda computers.
• Versus a Haltech flying-lead harness you terminate yourself: Flying leads suit one-off builds, and Tuned By Shawn sells them. This Rywire B-Series Haltech Nexus 4-injector harness arrives with every B-series plug terminated.
• Versus the factory computer: This Rywire B-Series Haltech Nexus 4-injector harness wires in powered CAN, an LSU 4.9 or CAN wideband, AEM oil temperature, oil pressure and fuel pressure, and flex-fuel-ready AUX inputs.
• Four-injector layout: This Rywire B-Series Haltech Nexus 4-injector harness leaves out the secondary injector bank, exhaust back pressure sensor and boost solenoid plug, so nothing sits unused.
• Separate chassis adapter: The interior side of this Rywire B-Series Haltech Nexus 4-injector harness is its own adapter. Moving the engine to another chassis means a new adapter, not a new harness.
• Tuned with Haltech: Tuned By Shawn tunes Haltech, so we can help match this Rywire B-Series Haltech Nexus 4-injector harness to your computer and tune.

Best for: B-series swaps on Haltech Nexus S2/S3/R3 with 4 injectors. Elite: B-series Elite 4-injector version. Boost or 8 injectors: B-series Nexus 8-injector version.

Engine Swap Fitment

• Honda B-series engines; Rywire also files this harness under D-series
• Plug-in chassis adapters for 1984-2000 Civic, 1984-1991 CRX, 1990-2001 Integra and 1987-1991 and 1997-2001 Prelude
• Any other chassis, sand rail, buggy, gutted circuit car or drag car through the Rywire Race Fuse/Relay Box V3 or a custom interior side
• Engine computer: Haltech Nexus S2, Haltech Nexus S3, Haltech Nexus R3, Haltech Elite 2500, Haltech Elite 1500 or Haltech Elite 750

Features

• Fully pre-terminated B-Series race loom: the sensors, coils and injectors plug straight in
• 4-injector layout
• Wideband: Bosch LSU 4.9 sensor plug, or lambda over CAN, depending on the computer
• Programming connection: Ethernet or USB, depending on the computer
• Powered CAN bus for loggers, dashes and gauges
• 12-pin engine-bay AUX expansion with power, 5V, sensor ground, CAN and 6 analog/digital inputs
• 5-pin cabin AUX expansion with 5V, sensor ground and 3 analog/digital inputs
• Flex fuel ready: wire the Rywire flex fuel kit into the AUX connector
• Drive-by-wire ready: Rywire can build an AUX expansion for the DBW throttle body and pedal
• Interior side is a separate chassis adapter, so the engine harness can move to another chassis
• Built to order by Rywire in the USA

Connector List

• Engine computer plug: Haltech Elite 1500 and up
• Throttle position (TPS) and coolant temperature (ECT): factory Honda B-Series
• VTEC solenoid and reverse lights: factory Honda (1992 and later style)
• Vehicle speed sensor: factory Honda B-Series hydraulic transmission style
• Starter trigger: factory Honda
• Ignition: factory Honda K-series smart coils, with ground ring terminals for the coils and computer
• Knock sensor: Bosch 0261231188 two-wire (EV1-style plug)
• Alternator: factory Honda, OBD0/OBD1 or OBD2 plug (OBD2 by default)
• Injectors: 4 outputs, Bosch EV14 plugs by default (ID 1050X style)
• Cam/crank trigger: T1 Race Development trigger by default
• Air temperature: AEM 30-2014
• Oil temperature: AEM 30-2013
• Fuel pressure: AEM 30-2130-100
• Oil pressure: AEM 30-2130-150
• Manifold pressure (MAP): AEM 30-2130-50 or 30-2130-75

Choosing Options

• Chassis Adapter: the interior side of the harness. Pick your chassis to get a plug-in adapter for that car, the Race Fuse/Relay Box V3 (with or without the Rywire Switch Panel) for a race car, sand rail or gutted chassis, Rywire PDM System if you run a Rywire chassis harness with PDM, or Other / Custom / Race-Style for a one-off layout.
• Injector Plug: the plug on your injectors. Bosch EV14 covers most Injector Dynamics injectors; Nippon Denso covers the ID2000.
• ECU, Alternator & MAP: your Haltech Nexus S2, S3 or R3 computer, the alternator plug (OBD1 for 1992-1995 parts, OBD2 for 1996-2000 parts) and the MAP sensor style (OEM or AEM).
• Built with Rywire's defaults for the remaining sensors: OEM-style intake air temperature plug. A rear speed sub-harness for a Hall or magnetic sensor is available in Recommended Add-Ons.
• Running a Haltech Elite? See the Haltech Elite version of this harness.

Recommended Add-Ons

• Rywire Bosch Knock Sensor Kit with M12 to M8 Stud Adapter.
• Rywire Rear Speed Sensor Sub-Harness - Hall or Magnetic, Haltech B/K Harness.

Add any of these from the Recommended Add-Ons list above. Each one is its own listing.

What's Included

• Rywire B-Series standalone engine harness for the Haltech Elite, 4 injector
• Interior side as selected under Chassis Adapter

Frequently Asked Questions

Which Haltech computers does this harness work with?

Rywire lists the computer plug for the Haltech Elite 1500 and up, and the configuration choice also covers the Elite 2500 and 750 and the Nexus S2, S3 and R3. Choose the exact computer under ECU so the correct plug is fitted.

Can I run a secondary injector bank with this harness?

No, this build has four injector outputs. For a secondary bank, Rywire offers the eight-injector version, the B Series Haltech (8 Injector) Elite Engine Harness.

Do I need the factory Honda fuse box?

No. Pick the Race Fuse/Relay Box V3 as the chassis adapter and the harness runs on its own in any car. Pick your chassis instead if you want to keep the factory interior wiring.

Which injector plug should I choose?

Bosch EV14 is the default and suits most Injector Dynamics injectors. Email service@tunedbyshawn.com with your engine, chassis and ECU before ordering if you are unsure which configuration you need. Tuned By Shawn can tune your swap on Haltech.

Should I buy the Rywire B-series Haltech harness or terminate a Haltech flying-lead harness myself?

A flying-lead harness suits a one-off layout if you have the crimp tools and time to terminate every connector. The Rywire B-Haltech-NA harness arrives pre-terminated for the B-series engine and the Haltech Nexus S2, S3 or R3, with the chassis adapter, injector plug and alternator plug picked at checkout.

For off-road and competition use only. Not legal for use on pollution-controlled motor vehicles.