Rywire Budget Tucked K-Series Engine Harness V2 - K20 Swap (K2-Base)

Rywire K2-Base is the budget version 2 tucked K-series engine harness for K20 swaps. Version 2 routes like the OEM K-series harness, through the center or toward the right side of the firewall, which suits right-hand-drive cars but works fine in left-hand-drive chassis too, and it clears aggressive headers. It matches the K2 mil-spec harness except for the wire type, single black color and expandable loom. No core is needed.

Why This K20 Swap Harness for Your K-Swap

Rywire K2-Base is a budget tucked K20 swap harness for K-swaps into older Honda chassis: all-new wire, pins and plugs with 2002-2004 K20-style crank, ECT, knock and alternator plugs, routed like the OEM K-series harness.

• Versus re-pinning your donor harness: Donor K-series harnesses are often 20+ years old, cut, brittle or missing plugs. This Rywire K20 budget harness is built new to order, so no core is needed.
• Versus a universal flying-lead harness: With flying leads you terminate every connector yourself. This Rywire K20 budget harness is crimped with pneumatic heads, ID-labeled, and tested pin to pin and resistance checked before shipping.
• Versus Rywire's mil-spec line (K2-Mil-spec): The Rywire K2-Mil-spec K20 harness has the same V2 layout and connectors, built with Tefzel wire rated to 200 C in factory colors under Raychem DR-25, for a show-quality bay.
• Why pick the budget build: This Rywire K20 budget harness gives the same plug-in fit for less money, using single black wire in expandable loom. Choose it when function matters more than wire colors.
• Version 2 routing: This Rywire K20 budget harness runs through the center or right of the firewall like the OEM K-series harness, works in LHD and RHD cars and clears aggressive headers.
• Built by a Honda swap wiring specialist: Rywire built the 1988 CRX K20 featured in Super Street (2009) and the ITR-powered E-AT Civic on the November 2013 Honda Tuning cover.

Best for: K20 swaps on a budget that still want a new, tucked, tested harness. K24 engine: Rywire K24-Base. Pair it with a K-Series Chassis Adapter.

Engine Swap Fitment

• Honda K20 engines (2002-2004 K20 style crank, coolant temperature, knock and alternator plugs)
• Left-hand-drive and right-hand-drive chassis
• Needs a K-series chassis adapter for your car, which adds the interior E-plug

Features

• Version 2 routing: OEM-like path through the center or right of the firewall
• Clears aggressive headers
• Single black wire in expandable loom
• Cam position sensor wired on the exhaust side and TDC sensor on the intake side; swap wires A25 and A26 at the computer if you prefer it the other way
• All new connectors, pneumatically crimped and labeled; pin-to-pin and resistance tested
• No core required
• Built to order by Rywire in the USA

Connector List

• Computer plugs A and B
• Power distribution cap
• Injectors 1-4
• Coils 1-4
• VTEC solenoid
• VTC solenoid
• Oil pressure sending unit
• Crank sensor (2002-2004 K20 style)
• Cam position sensor (exhaust side)
• TDC sensor (intake side)
• Coolant temperature (2002-2004 K20 style)
• Knock sensor (2002-2004 K20 style)
• Intake air temperature
• MAP sensor
• Throttle position sensor
• Idle control motor
• Vehicle speed sensor
• Alternator (2002-2004 K20 style)
• Coolant temperature sender for the gauge cluster
• Reverse lights
• Reverse lockout solenoid
• Starter signal
• Ground
• 2 extra wires

Choosing Options

• VSS Location: where the speed sensor sits on your K-series transmission, in front by the headlights or at the rear by the firewall.

Recommended Add-Ons

• 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 K-Series Chassis Adapter - K-Swap Into 1988-2001 Civic, CRX, Integra, Accord, Insight.

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

What's Included

• Rywire budget tucked K-series engine harness, version 2

Frequently Asked Questions

Is this harness plug and play into my Civic or Integra?

Not by itself. It follows the OEM K-series layout, so you still need the Rywire K-Series Chassis Adapter for your car.

Does version 2 work in a left-hand-drive car?

Yes. The version 2 routing is ideal for right-hand-drive cars but is not limited to them.

Do I need to send in a core?

No core is needed. Email service@tunedbyshawn.com with your engine, chassis and ECU before ordering if you are unsure which configuration you need.

Should I buy the Rywire budget or mil-spec tucked K20 harness?

Both use the same Version 2 layout and connectors. The budget K2-Base costs less and uses single black wire in expandable loom; the mil-spec K2-Mil-spec uses Tefzel wire in factory colors under Raychem DR-25 with adhesive-lined junctions.

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