The HDBB6CH 6-Channel Backbone Harness from Diamond Audio is the essential upgrade for expanding your Harley-Davidson® saddlebag audio system. Designed for riders installing more than one set of speakers per saddlebag, this harness replaces the standard 2-channel harness included with most lid kits and enables clean, reliable power and signal distribution to up to three speakers per saddlebag.

Engineered for true plug-and-play installation, the HDBB6CH connects directly to factory connectors with no re-pinning or cutting of the OEM harness required. This saves installation time while preserving factory integrity and serviceability. High-quality, waterproof connectors ensure long-term reliability in harsh riding conditions, protecting against moisture, vibration, and road debris.

The 6-channel design supports advanced multi-speaker saddlebag configurations, making it ideal for high-output motorcycle audio builds, custom bag installs, and premium Harley-Davidson® upgrades. Whether you’re increasing volume, improving clarity, or expanding your system, the HDBB6CH provides a clean, professional backbone for your saddlebag speakers.

For riders and installers seeking seamless integration, durability, and scalability, the HDBB6CH Backbone Harness delivers dependable performance and a factory-clean finish.