Grimmspeed Wiring Harness Hella Horn Subaru WRX / STI 2015-2021

When wiring Hella Horns on your awesome GrimmSpeed BroTie Bracket, we've got the perfect solution. No need to build a Hella horn harness from scratch. Our pre - assembled, OEM - quality harness lets you plug and play in seconds. The latest version features a custom - molded connector for a precise fit and is longer to fit all 15+ WRX/STI models. Our harness doesn't come with the Hella - provided relay as standard. After testing, we found that the extra few dBs from using a relay aren't worth the hassle and potential failure points of a more complex setup. But if you want those extra decibels, our harness can be adapted for a complex relay harness. Part #: 040026 QUICK SPECS: - Automotive Grade 16ga Wire: Low resistance for maximum volume. - Heat Shrink Terminals: Ensure a reliable connection. - Protective Wire Sleeving: A clean black look and protection against abrasion and stress. - Plug - n - Play with OEM Harness: Install and uninstall in seconds. Supersedes 040015.

Using this Grimmspeed wiring harness for your Hella horns on a 2015 - 2021 Subaru WRX/STI is a breeze. First, locate the appropriate connection points on your vehicle and the Hella horns. Then, simply plug the harness into the OEM harness and the horns. It's designed for a quick plug - n - play installation, so you can have it up and running in seconds. Remember, the standard harness doesn't include the Hella - provided relay. If you decide to use a relay for a bit more volume, you'll need to adapt the harness. Make sure to follow all safety procedures when working with electrical components, like disconnecting the battery before installation. For maintenance, regularly check the wire sleeving for any signs of wear or damage. If the heat - shrink terminals seem loose, you can carefully re - crimp them. Keep the harness clean to ensure a long - lasting and reliable performance.