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The Viper THSUN1 T-Harness is a specialized wiring solution designed exclusively for installing Viper DS4+ remote start systems in a comprehensive range of Subaru vehicles with traditional key ignition systems. This precision-engineered harness covers popular Australian models including the WRX, WRX STI, Forester, Outback, Impreza, Legacy, and Crosstrek across model years from 2010 to 2021, making it an essential component for Subaru installations.
Built specifically for Subaru's unique electrical architecture and all-wheel drive systems, the THSUN1 provides seamless integration with the brand's sophisticated control modules while maintaining proper AWD functionality. The DS4+ exclusive design ensures optimal performance with Viper's advanced security and remote start features, making it ideal for Subaru enthusiasts who demand reliable cold-weather starting capability.
Extensive Model Coverage - Supports Australia's most popular Subaru models including performance variants (WRX, STI) and family vehicles (Forester, Outback) across an 11-year span from 2010-2021.
DS4+ Exclusive Optimization - Purpose-built for DS4+ systems only, taking full advantage of the 5 high-current relays and advanced security features not available in standard DS4 systems.
AWD System Integration - Properly interfaces with Subaru's sophisticated all-wheel drive control systems, ensuring remote start functionality doesn't interfere with AWD operation or traction management.
Performance Vehicle Ready - Includes specific compatibility for high-performance models like WRX and WRX STI, addressing their unique electrical requirements and anti-theft systems.
Cold Climate Benefits - Perfect for Australian winter conditions, allowing Subaru owners to warm up their vehicles remotely while maintaining proper AWD system initialization.
Advantages:
Limitations:
Will this work with DS4 systems? No, this harness is exclusively designed for DS4+ systems only. DS4 systems require different harnesses.
Does it work with push-button start Subarus? No, this is specifically for traditional key ignition Subarus. Push-button models need different solutions.
Will remote start affect my AWD system? No, the harness is designed to maintain proper AWD functionality and system initialization.
Which specific model years are covered? Coverage varies by model. See the detailed compatibility list for your specific Subaru model and year.
Note: Always verify your specific Subaru model and year against the detailed compatibility list before ordering.
Servicing the Illawarra and surrounding areas for over 30 years, Frankies Auto Electrics is a multi-award winning service provider and retail outlet, covering all aspects of auto electrical work and in-car entertainment. From sales and installations, electrical diagnostics and fault finding, upgrades and additions, our team of qualified sales people, technicians and installers are on hand to help.
Albion Park
69 Princes Highway, Albion Park Rail, NSW Australia 2527
South Nowra
4/142 Princes Highway, South Nowra, NSW Australia 2541
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