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

When wiring Hella Horns onto your sleek GrimmSpeed BroTie Bracket, we've got the perfect solution. No need to struggle with making a Hella horn harness from scratch. Our simple, pre - assembled OEM - quality harness lets you plug and play in seconds. The latest version has a custom - molded connector for a precise fit and is longer to fit all 2015+ WRX/STI models. Our harness doesn't include the Hella - provided relay as standard. After testing, we found that the extra few decibels from using a relay aren't worth the hassle and potential failure points of a more complex setup with a relay, inline fuse, and direct battery wiring. But if you want those extra decibels, our harness can be adapted for a more complex relay harness. Part #: 040026. Supersedes 040015. Quick Specs: Automotive Grade 16ga Wire for minimal resistance and maximum volume; Heat Shrink Terminals for a reliable connection; Protective Wire Sleeving for a clean look and protection against abrasion and stress; Plug - n - Play with OEM Harness for quick installation and removal.

Using this wiring harness is a breeze. First, locate the area on your GrimmSpeed BroTie Bracket where the Hella Horns will be mounted. Connect the harness to the horns following the plug - n - play design, which means it should fit right in within seconds. You don't need to worry about complex wiring as it's pre - assembled. Just make sure to connect it properly to your vehicle's OEM harness. Note that this harness doesn't come with the Hella - provided relay as standard. If you decide to use a relay later for a bit more sound, you can adapt the harness, but it might make the setup a bit more complicated. For maintenance, keep an eye on the protective wire sleeving. If it gets damaged, it might expose the wires to abrasion and stress, so replace it if necessary. Also, check the heat - shrink terminals from time to time to ensure they're still making a good connection.