Rywire Mil-Spec Tucked D/B-Series Engine Harness, OBD2 - B-Swap for Civic, CRX, Integra (B2-Milspec)

Rywire B2-Milspec is the OBD2 version of the Rywire mil-spec tucked D/B-series engine harness: OBD2 injector and alternator plugs with your choice of OBD2 10-pin or 8-pin distributor plug. "OBD2" refers to those engine-side plugs; the computer end uses OBD1 (1992-1995) plugs. The loom is Tefzel (ETFE) wire rated to 200°C under Raychem DR-25 heat shrink.

Why This Mil-Spec OBD2 B-Series Swap Harness

The Rywire B2-Milspec is a mil-spec tucked B-series swap harness with OBD2 injector, alternator and 10-pin or 8-pin distributor plugs, OBD1 computer plugs and a chassis adapter for your car.

• Versus re-pinning your donor or factory harness: donor harnesses are often 20+ years old, cut or missing plugs; this Rywire mil-spec harness is all-new wire, pins and plugs, pneumatically crimped, labeled and pin-to-pin tested.
• Versus a used junkyard harness: this Rywire mil-spec harness needs no core and comes with a chassis adapter matched to the vehicle chosen at checkout.
• Versus a universal flying-lead harness: this Rywire mil-spec harness arrives terminated for OBD2 injectors, OBD2 alternator, your distributor plug and OBD1 computer plugs A, B and D.
• Versus Rywire's budget line: this mil-spec harness adds Tefzel (ETFE) wire rated to 200 C, Raychem DR-25 heat shrink, the 8-pin distributor choice and an optional firewall quick disconnect.
• Change cars later: this Rywire harness has a separate interior chassis adapter, so moving the engine to another chassis needs only a new adapter.

Best for: OBD2 D/B-series swaps on an OBD1 computer needing mil-spec materials or a firewall quick disconnect. For a lower-cost tucked bay with a 10-pin distributor, pick B2-Base.

Engine Swap Fitment

• Honda D-series and B-series engines with OBD2 engine plugs
• Chassis adapters for 1984-2000 Civic, 1984-1991 CRX, 1990-2001 Integra and 1987-1991 Prelude
• Any other chassis, sand rail, buggy or drag car through the Rywire Race Fuse/Relay Box V3, which is also plug and play with the Rywire Switch Panel
• Engine computer: OBD1 plugs A, B and D. Aftermarket computers with OBD2 plugs and non-US OBD2 computers work through a computer adapter; USDM OBD2 computers and stock H22 and GSR computers are not supported

Features

• Mil-spec Tefzel (ETFE) wire, rated to 200°C, with high chemical resistance
• Raychem DR-25 heat shrink and adhesive-lined wire junctions
• Tucked routing; can take a firewall-mounted mil-spec quick disconnect so the engine comes out without unpinning anything
• All new connectors, pneumatically crimped and labeled for install
• Interior side is a separate chassis adapter, so a chassis change only needs a new adapter
• Pin-to-pin and resistance tested before shipping
• Built to order by Rywire in the USA

Connector List

• OBD1 engine computer plugs A, B and D
• Power distribution cap
• OBD2 injectors 1-4
• OBD2 distributor plug (10-pin or 8-pin)
• OBD2 alternator
• Throttle position (TPS)
• MAP sensor
• Intake air temperature (intake manifold style)
• Engine coolant temperature
• Coolant temperature sender for the gauge cluster
• Primary 4-wire oxygen sensor
• Knock sensor
• Oil pressure sending unit
• VTEC solenoid
• Idle control motor
• Electronic speed sensor
• Fan switch
• Reverse lights
• Starter signal
• Ground
• 2 extra wires

Choosing Options

• Chassis Adapter: your car, the Race Fuse/Relay Box V3 (with or without Switch Panel), Rywire PDM System, or Other / Custom / Race-Style.
• Distributor Plug: count the wire positions on your OBD2 distributor plug and pick 10-pin or 8-pin.
• Injector Plug: the plug fitted at each injector. NH1 / Honda OBD2 is the stock choice; pick another if you run aftermarket injectors.
• Mil-spec quick disconnect plug: Rywire can add a firewall separation plug (mounted in the A/C hole by default) for an extra charge. Ask us for a quote.

Recommended Add-Ons

• Rywire Mil-Spec Firewall Quick Disconnect Plug - Harness Build Option.
• Rywire RyTi Titanium VTEC Solenoid Bolt - VTEC Oil Pressure Switch Delete.
• Rywire One-Piece Charge Harness - Honda B/D/F/H/K-Series Swap Harnesses.
• Rywire Engine Ground Kit - 4-Gauge Battery Cable & 8-Gauge Grounds for Swap Harnesses.
• Rywire Mil-Spec Connector Plate, 3 x 5 in - A/C Firewall Hole Harness Pass-Through.
• Rywire Mil-Spec Connector Plate, 3 x 3 in - A/C Firewall Hole Harness Pass-Through.

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

What's Included

• Rywire OBD2 mil-spec tucked D/B-series engine harness
• Chassis adapter or interior side as selected

Frequently Asked Questions

What does OBD2 mean on this harness?

It describes the injector, alternator and distributor plugs on the engine side. The computer plugs are OBD1, so a USDM OBD2 computer is not supported.

10-pin or 8-pin distributor?

Count the wire positions on your distributor connector. Rywire builds either one at the same price.

I want to pull the engine without unpinning the harness. Is that possible?

Yes. Add the mil-spec quick disconnect plug and a Rywire connector plate at the firewall. Email service@tunedbyshawn.com with your engine, chassis and ECU before ordering if you are unsure which configuration you need.

Can I pull the engine without unpinning a Rywire mil-spec B-series swap harness?

Yes. Add the Rywire mil-spec quick disconnect plug and a Rywire connector plate at the firewall, and the engine side of the B2-Milspec unplugs in one piece.

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