GrimmSpeed Hella Horn Wiring Harness 2015-2021 WRX / 2015-2021 STI

DESCRIPTION

The GrimmSpeed Hella Horn Wiring Harness is a simple, plug-and-play solution designed specifically for the 2015-2021 Subaru WRX and 2015-2021 Subaru STI. Built to pair perfectly with Hella horns mounted on a GrimmSpeed BroTie Bracket, this pre-assembled harness eliminates the hassle of custom wiring. Featuring an OEM-style, custom-molded connector and extended length for proper routing, it installs in seconds while maintaining a clean and factory-quality appearance.

WHY?

Wiring horns should not be the hardest part of the install. This GrimmSpeed harness was engineered to deliver reliable power and strong volume without unnecessary complexity. After testing, GrimmSpeed chose to skip the traditional relay setup, avoiding extra wiring, fuses, and potential failure points while still delivering excellent sound output. The result is a durable, clean, and dependable solution that delivers strong performance without overcomplicating the install.

FEATURES:

• Automotive grade 16ga wire for minimal resistance and strong output

• Heat shrink terminals for secure and reliable connections

• Protective wire sleeving for a clean look and added durability

• Plug-and-play design with custom connector for quick installation

COMPATIBILITY

2015-2021 WRX

2015-2021 STI