For owners of Harley-Davidson Touring motorcycles, particularly models such as the 2014–2023 Street Glide and Electra Glide, upgrading the onboard audio and navigation systems is a common enhancement that improves both functionality and comfort during long rides. This article provides a detailed, step-by-step guide to installing the Soundstream HDHU14+ head unit and related accessories, as outlined in official installation manuals, firmware notes, and technical guides. The instructions are derived from verified manufacturer documentation and installation guides, ensuring technical accuracy and alignment with manufacturer specifications.
The Soundstream HDHU14+ is a high-performance head unit designed for integration with Harley-Davidson's onboard systems, including the wiring harness, hand control module, and audio components. This article will also cover additional installation guides, such as those for sound deadening kits and amplifier assembly, as detailed in official service and product documentation. These instructions are essential for both DIY enthusiasts and professional technicians seeking to upgrade or maintain Harley-Davidson motorcycle audio systems.
Soundstream HDHU14+ Installation Guide
The installation of the Soundstream HDHU14+ head unit is a precise process that requires careful handling of the wiring harness and alignment with the factory system. The following steps are drawn from official installation guides and should be followed carefully to ensure a safe and functional installation.
Step 1: Preparing the Soundstream Kit
The Soundstream HDHU14+ kit includes the head unit chassis, a pre-assembled wiring harness, and an optional hand control module. These components arrive preassembled, streamlining the installation process. Before beginning the physical installation, users are advised to review the full installation video referenced in the documentation, as it provides visual guidance for removing the existing factory radio and preparing the mounting area.
Step 2: Disassembly of Factory Radio
To install the new head unit, the existing Harley-Davidson radio must be removed. This process is outlined in the video and includes disconnecting power and signal lines, removing mounting hardware, and clearing space for the new unit. Users should exercise caution to avoid damaging surrounding components or the wiring harness.
Step 3: Connecting the Wiring Harness
The Soundstream HDHU14+ features a keyed wiring harness system, which ensures that each plug connects only to its correct counterpart. This prevents miswiring and simplifies the installation process. The primary connections include:
- Main Harness Connection: Connect the Soundstream wiring harness to the factory Harley-Davidson harness.
- AM/FM Antenna Connection: Ensure the AM/FM signal is routed correctly for radio functionality.
- USB Connection: Connect the USB port for charging and data transfer capabilities.
- Microphone Connection (Optional): If voice command or phone features are desired, the Soundstream microphone should be connected.
All connections must be double-checked to ensure full functionality and to prevent short circuits or signal loss. The keyed nature of the plugs ensures that users cannot make incorrect connections, reducing the risk of installation errors.
Step 4: Final Installation and Testing
After all wiring connections are made, the Soundstream HDHU14+ is mounted into the dashboard or control panel. Users are advised to secure the unit firmly to avoid vibration-related damage. Once mounted, the unit should be powered on and tested for basic functionality, including audio output, signal reception, and control responsiveness.
For Road Glide models, specific disassembly and installation instructions are provided in page 23 of the instruction manual. These instructions address unique mounting requirements and wiring configurations for this model.
Boom!™ Box GTS Toolbox Installation for Map Updates
Harley-Davidson’s navigation systems can be updated using the Boom!™ Box GTS Toolbox, a free software application that allows users to download and install map updates directly to their motorcycle’s onboard system. This tool is essential for ensuring that the navigation system remains current with the latest road data and points of interest.
System Requirements
Before installing the Boom!™ Box GTS Toolbox, users must ensure their computer meets the minimum requirements:
- Windows: Windows 7 or newer
- Mac OS X: 10.10 or newer
- Internet Connection: A stable broadband connection is recommended for faster downloads
In addition, a USB flash drive with a minimum capacity of 16GB is required to store and transfer map data to the motorcycle.
Installation Process
The installation process for the Boom!™ Box GTS Toolbox is straightforward and includes the following steps:
- Download the Software: Visit the official Harley-Davidson website and select the appropriate version for your operating system. The download will begin automatically.
- Run the Installer: For Windows users, double-click the downloaded file and follow the prompts. For Mac users, the installer will be located in the Downloads folder.
- Complete the Wizard: The installation wizard will guide users through the setup process, including language selection and folder configuration.
- Connect the USB Drive: Once installed, connect the USB flash drive and follow the on-screen instructions to prepare it for map storage and transfer.
After installation, the software can be used to purchase, download, and install map updates directly to the motorcycle’s navigation system. Users should ensure their BOOM™ Box GTS is running software version MY19.18.35.00 or newer to be compatible with the tool.
Soundskins Pro Cut Sound Deadening Kit Installation
For riders seeking to improve the acoustics of their Harley-Davidson motorcycle, the Soundskins Pro Cut Sound Deadening Kit is an effective solution. This kit is specifically designed for 2014–2023 Street Glide and Electra Glide models and is intended to reduce ambient noise and enhance the performance of the onboard audio system.
Installation Steps
The installation of the sound deadening kit includes the following key steps:
- Preparation: Ensure the motorcycle is in a stable, well-lit workspace. Gather all necessary tools, including a screwdriver, pliers, and a utility knife.
- Mounting the Speaker Pod: The speaker pod is mounted into the fairing using pre-drilled holes and mounting screws. Care must be taken to align the pod correctly to ensure optimal sound dispersion.
- Sound Deadening Application: The deadening material is applied to the interior of the fairing and other high-noise areas. This material absorbs sound waves and reduces echo and vibration.
- Final Adjustments: After installation, the speaker pod is tested for sound quality and volume. Adjustments may be necessary to optimize the audio experience.
This installation guide is intended to be used alongside the video tutorial provided by the manufacturer, which offers visual guidance for each step.
Amplifier Assembly and Wiring
For more advanced audio setups, the installation of an external amplifier is often necessary. This process involves mounting the amplifier, routing the wiring harness, and connecting it to the motorcycle’s electrical system. The following steps are drawn from official service manuals and installation guides.
Amplifier Mounting
The amplifier must be securely mounted in a location that provides adequate ventilation and accessibility. The installation process includes:
- Positioning the Mounting Brackets: Left and right mounting brackets are attached to the amplifier using screws with a specified torque of 1–2 N·m (9–18 in-lbs).
- Aligning the Amplifier Cover: The amplifier cover is aligned with the mounting holes in the trunk wall and secured using screws with a torque of 5–6 N·m (44–53 in-lbs).
- Installing the Carpet: A layer of carpet is installed over the amplifier cover to provide insulation and reduce vibration.
Wiring Harness Routing
The wiring harness must be carefully routed to avoid interference with other components and to ensure a clean installation. The following steps are outlined in the installation guide:
- Starting at the Front of the Vehicle: The wiring harness is routed from the front of the vehicle, using cable straps to secure it in place.
- Routing the Branch Connector: A branch connector is routed behind the battery box area and along the right side cover. Alternative routing paths are also available depending on the vehicle’s layout.
- Connecting the Amplifier Harness: The amplifier harness is connected to the vehicle’s wiring system. This includes connecting the amplifier harness [319A] to the vehicle [319B], and the amplifier harness [319B] to the terminating resistor cap [319A].
All connections must be double-checked for proper alignment and secure fit. Once complete, the system should be tested for functionality and performance.
Customization and Financing Options
For riders interested in customizing their Harley-Davidson motorcycle with additional parts and accessories, several incentives and financing options are available. These programs are offered by Harley-Davidson dealerships and are subject to specific terms and conditions.
Customization Credit
Harley-Davidson offers a customization credit of up to $2,000 for in-dealership purchases of Genuine Harley-Davidson Parts & Accessories and Apparel & Licensed Merchandise. This credit is valid for the purchase of select Grand American Touring, Trike, and Softail models and is available at participating dealerships in the United States, including Alaska and Hawaii. The offer is valid from August 27, 2024, to October 31, 2024, and is subject to change without notice.
Financing Offers
Harley-Davidson also offers financing options for new and untitled 2022 and 2023 models, including Grand American Touring, Adventure Touring, Trike, CVO™, Softail®, and Custom motorcycles. These financing options are available through Eaglemark Savings Bank and are subject to credit approval. The offers include:
- $0 Down Payment
- As Low as 3.99% APR
For example, a 2023 Street Glide® Special with an MSRP of $29,499 and a 3.99% APR over 60 months results in a monthly payment of $543.14. Additional fees, including taxes, title, and licensing fees, may apply. The offer is valid until October 31, 2024, and is subject to change or cancellation at any time.
Conclusion
The installation and customization of Harley-Davidson motorcycle systems involve a range of technical and practical considerations. From the precise installation of the Soundstream HDHU14+ head unit to the routing of amplifier wiring and the application of sound deadening materials, each step must be performed with care and attention to detail. These processes are supported by official installation guides, technical manuals, and manufacturer documentation, ensuring that users can complete their projects with confidence and accuracy.
For riders seeking to enhance their motorcycle’s functionality and comfort, the tools and resources provided by Harley-Davidson and its partners offer valuable support. Whether through the use of the Boom!™ Box GTS Toolbox for map updates, financing options for new models, or customization credits for parts and accessories, these programs provide opportunities for riders to tailor their motorcycles to their specific needs and preferences.