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GrimmSpeed Hella Horn Wiring Harness - 15-20 WRX/STI

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This is the Grimmspeed wiring harness for those of you planning on installing Hella Horns on your vehicle. This wiring harness provides a clean and secure means of installation especially if you wanted to install the Hella Horns in a custom location or if you have purchased one of the horn mounting brackets.

And nobody likes looking at a rat’s nest of wires in the engine bay. If you’re installing the Hella Horns, keep things neat, and tidy with the Grimmspeed wiring harness.


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