Kuryakyn 7673 Plug & Play Trailer Wiring Harness User Manual

1. Product Overview

The Kuryakyn 7673 Plug & Play Trailer Wiring with Relay Harness is designed to provide essential trailer lighting functions for 2001-2010 Honda Gold Wing GL1800 motorcycles. This harness simplifies the connection process, offering a reliable solution for towing applications.

It provides standard five-wire output for run, brake, left turn, right turn, and ground. Additionally, a bonus wire is included for connecting 12V fused power to the trailer, suitable for compartment lights or keyless entry systems. The integrated relay harness efficiently directs power from the motorcycle's battery to the appropriate trailer lighting circuits.

Included Components:

• 1 x Trailer Wiring Isolation Relay
• 1 x GL 1800 Trailer Sub Harness
• 1 x Inline Fuse and Y-Wire Assembly with Heat Shrink Covered Butt Connectors
• 1 x Hardware Kit
• 1 x Alcohol Pad

Suggested Tools (Not Included): Set of hex wrenches, combination wrenches, side cutter, electrical tape, set of screw drivers, test light or multi meter.

An image showing the various components of the Kuryakyn 7673 trailer wiring harness, including the main wiring bundle, an inline fuse holder with a red and black wire, and several gray electrical connectors.

2. Safety Information

Always exercise caution when working with electrical systems. Disconnect the motorcycle's battery before beginning installation to prevent electrical shorts or injury. Ensure all connections are secure and properly insulated to avoid malfunctions.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

3. Setup and Installation

The Kuryakyn 7673 harness is designed for a plug-and-play installation on compatible Honda Gold Wing GL1800 models (2001-2010). While the design minimizes complex wiring, careful attention to the instructions is crucial for proper function.

1. Preparation: Ensure the motorcycle is turned off and the battery is disconnected. Gather all necessary tools as listed in the Product Overview.
2. Access: Locate the appropriate wiring access points on your Gold Wing GL1800 as indicated in the detailed installation guide. This typically involves removing certain body panels or seats.
3. Connect Sub Harness: Connect the GL 1800 trailer sub harness to the motorcycle's existing wiring. These connections are designed to be plug-and-play, matching existing connectors.
4. Install Isolation Relay: Integrate the trailer wiring isolation relay into the system. This relay manages power distribution to the trailer lights.
5. Inline Fuse and Y-Wire: Connect the inline fuse and Y-wire assembly. This provides fused 12V power for auxiliary trailer functions. Ensure heat shrink covered butt connectors are properly sealed.
6. Secure Wiring: Route and secure all wiring using the provided hardware kit or appropriate cable ties to prevent chafing or interference with moving parts.
7. Test Connections: Before reassembling the motorcycle, reconnect the battery and perform a thorough test of all trailer lighting functions (run, brake, turn signals) using a test light or multi meter, and ideally, by connecting to a trailer.
8. Reassembly: Once all functions are verified, carefully reassemble any removed body panels or seats.

For detailed, step-by-step installation instructions, please refer to the official user manual PDF available at: Kuryakyn 7673 User Manual (PDF).

4. Operation

Once installed, the Kuryakyn 7673 harness operates automatically when a trailer is connected to your motorcycle's trailer hitch wiring. The relay harness senses the motorcycle's lighting signals and directs power from the battery to illuminate the corresponding trailer lights.

• Running Lights: Activate when the motorcycle's headlights are on.
• Brake Lights: Illuminate when the motorcycle's brake lever or pedal is applied.
• Turn Signals: Flash in sync with the motorcycle's left or right turn signals.
• 12V Fused Power: The bonus wire provides constant 12V power for auxiliary trailer accessories, such as interior lights or keyless entry systems, as long as the motorcycle's ignition is on.

5. Maintenance

The Kuryakyn 7673 wiring harness is designed for durability and minimal maintenance. However, periodic inspection can help ensure long-term reliability:

• Visual Inspection: Regularly check all visible wiring and connections for signs of wear, fraying, corrosion, or damage.
• Connection Integrity: Ensure all plug connections remain secure and free of debris.
• Fuse Check: If a trailer light function fails, inspect the inline fuse. Replace with a fuse of the same rating if blown.
• Cleanliness: Keep the harness and connectors clean, especially after riding in wet or dirty conditions. The included alcohol pad can be used for cleaning electrical contacts.

6. Troubleshooting

If you experience issues with your Kuryakyn 7673 trailer wiring harness, consider the following troubleshooting steps:

If these steps do not resolve the issue, it is recommended to consult a qualified motorcycle technician or contact Kuryakyn customer support.

7. Specifications

8. Warranty and Support

For information regarding product warranty, returns, or technical assistance, please contact Kuryakyn directly through their official website or customer service channels. Always refer to the official Kuryakyn documentation for the most current warranty terms and conditions.

Official User Manual (PDF): https://manuals.plus/m/e28deb42b5bc9a328472987552793ca2ad0f2a81821de6d9e365f5222ccecb03

Visit the Kuryakyn Store: https://www.amazon.com/stores/Kuryakyn/page/B35EFDD5-3064-4325-89A8-DA927484406A