Haltech Nexus S2/S3 Plug-in Adapter Harness - Honda EP3 — Built for Drivers Who Demand Control

Built for tuners, racers, and builders who need genuine Haltech Wiring Harnesses hardware they can trust on the car and on the dyno.

The problem most builders run into

Cheap knockoffs and mystery parts waste install time and leave you guessing when the car isn’t right. You need the correct Haltech part number with clear specs — not a generic listing.

The new opportunity

This is the official Haltech HT-186343 from Kugan Tuning: the right part, clearly described from Haltech specs, ready for your build.

What you get

• Haltech part description: Haltech Nexus S2/S3 Plug-in Adapter Harness - Honda EP3
• Category: Engine Components / Wiring Harnesses
• Manufacturer part number: HT-186343
• Nexus S2/S3 Plug 'n' Play Adapter Harness - Honda EP3

Why buy from Kugan Tuning

Kugan Tuning doesn’t just ship boxes — we tune and support Haltech systems every day. After your order arrives, you can book an ECU setup call with us so the hardware and the calibration plan match your build.

Next step

Add the Haltech Nexus S2/S3 Plug-in Adapter Harness - Honda EP3 (HT-186343) to your cart as a draft-ready listing, then check out when you’re ready — or contact Kugan Tuning if you want help confirming fitment before you buy.

Compatibility depends on your vehicle and supporting hardware — contact us if you need help verifying fitment. Haltech products are designed and sold for sanctioned off-road/competition non-emissions controlled vehicles only.