Popular

Lexus SC300 / SC400 / Soarer Z30 Engine Harness

Starting at $1,500

Custom-built engine wiring harness designed for the Lexus SC300, SC400, and Toyota Soarer (Z30) platform. Purpose-built for 2JZ-GTE, 1JZ-GTE, and 1UZ swap applications with full chassis integration including gauges, AC, power steering, and all OEM accessories.

  • Plug and play for SC300, SC400, and Soarer Z30 chassis
  • Full chassis integration — gauges, AC, power steering
  • Supports 2JZ-GTE, 1JZ-GTE, and 1UZ engines
  • Compatible with all major standalone ECUs
  • OEM-style fit and routing
  • High-temperature motorsport-grade wiring
  • Turn-key engine start guarantee
  • Milspec connector option available
  • Future expandability in mind
  • 1-year warranty on workmanship

Why Choose SVK

Unlike modified factory looms, every SVK harness is built new from the ground up using modern materials, tested for continuity, and designed for long-term reliability. This makes it the ideal solution for high-quality street, track, and performance SC300, SC400, and Soarer builds.

1-Year Warranty: Every SVK Works harness is backed by a 1-year warranty covering defects in materials and workmanship. See our FAQ for full warranty details.

In Stock / Made to Order 5-7 Week Lead Time
Configure Your Harness

Harness Build Calculator

Select your options below to get an estimated price, then submit your build request.

Your Estimated Total

$1,500

Base price: $1,500. Final price may vary based on custom requirements.

Submit Your Build Request

Fill in your details and we'll send you a finalized quote.

Or email directly: info@svkworks.com

FAQ

Common Questions

Yes. SVK harnesses are fully plug and play — designed to connect directly to the SC300, SC400, or Soarer Z30 chassis with no cutting or modification of factory wiring. All chassis-side connectors are OEM-spec and match the Z30 body harness.
Yes. Our harness integrates with the factory SC300, SC400, or Soarer gauge cluster, retaining tachometer, speedometer, coolant temperature, and warning light functionality through your standalone ECU. No aftermarket gauge cluster is required.
We build for all major aftermarket standalone ECUs including Haltech Elite, Link G4X, MaxxECU, ECUMaster EMU Black/Pro, FuelTech FT550, and more. If your ECU isn't listed, just specify it in the notes and we'll accommodate it.
Yes. The harness provides full chassis integration for the entire Z30 platform (SC300, SC400, Soarer) including OEM gauges, A/C compressor control, power steering, cooling fan control, and all factory accessories. Everything is designed to work as it did from the factory.
All SVK harnesses are built from scratch using new high-temperature TXL cross-linked polyethylene wire, OEM-style Toyota/Sumitomo connectors, and motorsport-grade materials. No reused or modified factory wiring.
Standard lead time is 5-7 weeks from order confirmation. Complex builds (dual ECU, milspec connector) may take longer. Rush orders may be available — contact us to discuss.
Yes. The SC300, SC400, and Toyota Soarer all share the Z30 platform. Our harness is designed for the entire Z30 chassis family and supports 2JZ-GTE, 1JZ-GTE, and 1UZ engines. Simply select your engine and chassis options in the configurator above.

Free resource

SC300 / SC400 Wiring Diagrams (1992–1998)

Download factory OEM EWDs for every model year of the Lexus SC300 and SC400.

View Diagrams →