Upgrade your motorcycle or vehicle's horn system with GRNDZRO Loud Horn Wiring Harness Kits. Designed for single air horns, twin dual-tone horns, and selectable horn modes, our plug-and-play wiring harnesses deliver reliable electrical connections with no wire splicing required. Built for clean, hassle-free motorcycle and automotive horn upgrades.
Product Code: SLH1-AMC
For Horns with Single Air Compressor
The GRNDZRO Single Loud Horn Harness Kit is designed for horns that use a single air compressor, including compact air horns and single-compressor air horns. It connects the aftermarket air horn to the battery and stock horn triggers without requiring wire splicing.
Application: Motorcycle & Automotive
Ideal For: Compact Air Horns | Single-Compressor Air Horns
Features: Plug & Play | Universal | No Splices
Product Code: TLH1-MC
For Twin Horns with Dual Tone
The GRNDZRO Twin Loud Horn Harness Kit is designed for dual-tone aftermarket horns. It provides connections for the aftermarket loud horns, stock horn triggers, and battery for a clean and organized installation.
It is ideal for riders upgrading to dual disc horns or dual snail horns.
Application: Motorcycle
Ideal For: Dual Disc Horns | Dual Snail Horns
Features: Plug & Play | Universal | No Splices
Product Code: DHM1-MC
For Dual-Tone Horns with Stock Horn Switcher
The GRNDZRO Dual Horn Mode Harness Kit gives riders the ability to switch between an aftermarket twin or loud horn setup and the motorcycle's single stock horn.
The harness provides connections for the aftermarket loud horns, stock horn, stock horn triggers, battery, and mode switcher.
Application: Motorcycle
Ideal For: Dual-Tone Loud Horn + Stock Horn Mode Switching
Features: Plug & Play | Universal | No Splices | Mode Switcher
Product Codes: VLHUS1-MC / VLHFB1-MC
For Dual-Tone Loud Horn Upgrade
The GRNDZRO Vespa Loud Horn Wiring Harness Kit is designed for dual-tone loud horn upgrades using dual disc or dual snail horns.
Two length variants are available to match the location of the Vespa battery.
VLHUS1-MC: Under-Seat Mounted Battery
VLHFB1-MC: Footboard Mounted Battery
Application: Vespa
Ideal For: Dual Disc Horns | Dual Snail Horns
Features: Plug & Play | Universal | No Splices | Two Length Variants
Product Code: TLH1-A
For Twin Horns with Dual-Tone Upgrade
The GRNDZRO Twin Loud Horn Harness Kit Automotive is designed for aftermarket dual-tone horns, including dual disc and dual snail horn setups.
The harness provides connections for the aftermarket loud horns, battery, and stock horn triggers. A grounding adapter is also provided in the wiring configuration for use when needed.
Application: Automotive
Ideal For: Dual Disc Horns | Dual Snail Horns
Features: Plug & Play | Universal | No Splices
Product Code: DAH1-A
For Dual-Compressor Air Horn Setup
Install a dual-compressor air horn setup with a wiring harness designed specifically for automotive use.
The GRNDZRO Dual Air Horn Harness Kit Automotive provides dedicated connections for two air horn compressors, the vehicle battery, and stock horn triggers.
It provides a clean wiring solution for vehicles upgrading to a dual-compressor air horn system.
Application: Automotive
Ideal For: Dual-Compressor Air Horn Setups
Features: Plug & Play
Choosing the correct wiring harness depends on your vehicle and electrical setup.
Send us your:
Vehicle Make
Vehicle Model
Vehicle Year
Our team can help identify the appropriate GRNDZRO product for your application.
For safe and proper operation, we recommend installation by a qualified technician or experienced installer. GRNDZRO technical support is also available for product selection, installation guidance, and troubleshooting.
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