Rywire Tucked K24Z3/K24Z7 Engine Harness for Civic/Integra

Rywire Tucked K24Z3/K24Z7 Engine Harness - K-Swap Civic, Integra & Del Sol

This is a Rywire tucked engine harness built specifically for a K24Z3 or K24Z7 swap into an older Honda or Acura. Its purpose is to let you run the newer engine's updated sensor plugs while keeping the proven 02-04 RSX computer plugs, so the popular KPro, Link, and AEM Series 2 tuning solutions stay plug-and-play. You get a modern K24 bottom end wired to the standalone setup the community already knows how to tune, with a clean tucked install instead of a hacked-together loom.

Newer Engine, Proven ECU Plugs

The K24Z3 moved to updated connectors on a number of its sensors, and this harness is designed around them. Every plug is set up to connect directly to the K24Z3 except for the few handled differently in the list below. On the ECU side, Rywire kept the 02-04 RSX computer plugs, which is the whole point. That's the plug set KPro, Link, and AEM Series 2 are built for, so you keep the engine management and tuning path that works instead of fighting newer plugs that nothing supports plug-and-play.

OEM-Style Routing

This harness follows a more OEM-style routing path, running through the center of the firewall or further to the right rather than off to one side. That makes it the preferred option for right-hand-drive chassis, though it isn't exclusive to RHD and installs cleanly on a left-hand-drive car as well. The routing also gives you room to work around an aggressive header, which is exactly where a lot of K-swap harnesses end up in the way.

Choose Your Options

Spec the harness to your build before ordering:

• Vehicle speed sensor: available with a front VSS or a rear VSS. The default is the 05-06 style up front, so select the rear option if your setup needs it.
• Charge harness: available with or without the K-series charge harness added. The charge harness option adds the starter and alternator wires, which handle the heavy cranking and charging current the engine harness doesn't carry on its own.

Built to Rywire's Standard

Every connector and material on this harness is new. Each one is crimped with pneumatic heads for an OEM-grade crimp, then tagged with a white identification label so the install makes sense as you go. Heavy-interference circuits are protected and properly grounded with the correct wire covering, and every harness is 100% pin-to-pin quality tested and resistance checked so there are no voltage fluctuations down the line. These are warrantied and guaranteed to work, backed by Rywire's installation phone support and troubleshooting, though they are non-refundable once you've started the install. There is no core charge.

You'll Still Need a Computer Adapter

Because this harness follows an OEM-style configuration, you'll still need an interior computer plug adapter for your specific chassis to connect it to the car's interior wiring. Add the matching K-Series computer adapter to your order so you have everything to finish the install in one go.

Connector List

All connectors are set up to plug into the K24Z3 unless noted otherwise:

• VTEC solenoid (K24Z3 style)
• VTC (K24Z3 and K20/24A style)
• Oil pressure sending unit (barrel connector style)
• Crank sensor / CKP (K24A2 style, required for KPro)
• Coils 1-4 (K24Z3 small style)
• Cam sensor / CPS, exhaust side (K24Z3 style)
• Top dead center sensor / TDC, intake side (K24Z3 style)
• Engine coolant temp / ECT (K24Z3)
• Knock sensor / KS (K24Z3 small style)
• Intake air temperature / IAT (K24Z3 style)
• Alternator (K24Z3 style, 4-pin)
• Manifold air pressure / MAP (K24Z3 style)
• Throttle position sensor / TPS (02-04 RSX)
• Idle control motor (02-04 RSX)
• Vehicle speed sensor / VSS (default 05-06 style, front)
• Injectors 1-4 (K24Z3)
• Water temp sending unit (for gauge cluster)
• Reverse lights (K24Z3 and K20/24A style)
• Reverse lockout solenoid (K24Z3 and K20/24A style)
• Starter signal (female spade connector)
• Computer plugs A and B (02-04 RSX)
• Power distribution cap
• Ground
• 2 extra wires

Fitment

Designed for a K24Z3 or K24Z7 swap into:

• Honda Civic (EF, EG, EK)
• Acura Integra (DA, DC)
• Honda Del Sol