1. Introduction
This instruction manual provides detailed guidance for the installation and operation of the Dasbecan 56473 Vehicle-Side Custom 4-Pin Trailer Wiring Harness. This harness is designed to provide a reliable electrical connection for towing applications, ensuring proper functionality of trailer lights.
Compatibility: This wiring harness is specifically designed for:
- Jeep Grand Cherokee L: 2021, 2022, 2023, 2024
- Jeep Grand Cherokee: 2022, 2023, 2024
A factory tow package is required for proper installation and function.
2. Kit Contents
Before beginning installation, verify that all components are present in your kit:

Image 2.1: Overview of the Dasbecan 56473 Trailer Wiring Harness kit contents, including the main harness, protective module, and connectors.
The kit includes the main wiring harness assembly, a protective power module, and various connectors and accessories necessary for installation.
3. Setup and Installation
The Dasbecan 56473 trailer wiring harness is designed for straightforward installation, requiring no cutting or splicing of existing vehicle wires. It connects directly into your vehicle's factory wiring system.
3.1. Harness Components Overview

Image 3.1: Diagram illustrating the various components of the wiring harness, including vehicle-side connectors, the 3-to-2 taillight converter, and the 4-pin trailer connector.
3.2. Protective Power Module
The harness includes a protective power module (3 to 2 Taillight Converter) constructed using surface-mount technology (SMT). This module ensures consistent, reliable performance and allows your trailer's lights to be powered without overloading your vehicle's electrical system. The enclosure is sealed and poxy-filled for durability.

Image 3.2: Close-up view of the protective power module, showing input and output connections for tail, brake, and turn signals.
3.3. Connector Details
The harness features plug-and-play connectors designed to integrate seamlessly with your vehicle's existing factory wiring. The vehicle socket's ergonomic design includes tabs for a better grip, making connection and disconnection easier.

Image 3.3: Detailed view of the various vehicle-side connectors and the standard 4-pin trailer wiring connector.
3.4. General Installation Steps (Consult Vehicle Manual for Specifics)
- Locate Factory Wiring: Identify the factory wiring harness connections on your vehicle, typically located near the rear taillights or under the vehicle's rear bumper. Refer to your vehicle's owner's manual for precise locations.
- Connect Harness: Plug the vehicle-side connectors of the Dasbecan 56473 harness directly into the corresponding factory wiring connectors. Ensure a secure and tight fit.
- Mount Module: Securely mount the protective power module in a dry, protected location using the provided hardware or zip ties.
- Route Wiring: Route the 4-pin trailer connector to a convenient location near your trailer hitch, ensuring it is protected from moving parts and excessive heat. Use zip ties to secure the wiring.
- Test Connection: Before towing, connect a trailer or a trailer light tester to the 4-pin connector and verify that all trailer lights (tail, brake, turn signals) function correctly.
4. Operating Instructions
Once the Dasbecan 56473 trailer wiring harness is installed, operating it is straightforward:
- Connect Trailer: Align the 4-pin connector from your trailer with the 4-pin connector on the vehicle harness. Push firmly until fully seated. The ergonomic design with tabs assists in a secure grip.
- Secure Connection: Ensure the connection is secure and free from debris.
- Verify Lights: Before driving, always check that all trailer lights (running lights, brake lights, left turn signal, right turn signal) are functioning correctly.
- Disconnect Trailer: To disconnect, firmly grasp the vehicle socket by its tabs and pull to separate the connectors.
5. Maintenance
To ensure the longevity and reliable performance of your Dasbecan 56473 trailer wiring harness, follow these maintenance guidelines:
- Dust Cover: The 4-pole trailer lighting wire harness includes a rubber dust cover. Always ensure this cover is in place when the harness is not in use to protect the connector from dirt, moisture, and debris.
- Clean Connectors: Periodically inspect and clean the 4-pin connector. Use a non-corrosive electrical contact cleaner if necessary. Ensure connectors are dry before use.
- Inspect Wiring: Regularly check the wiring for any signs of wear, fraying, or damage. Ensure all connections remain secure.
- Avoid Damage: Route the wiring in a manner that prevents it from being pinched, cut, or exposed to excessive heat or abrasion.
6. Troubleshooting
If you experience issues with your trailer lights after installing the Dasbecan 56473 wiring harness, consider the following:
- No Trailer Lights:
- Ensure the 4-pin connector is fully seated and secure.
- Check the vehicle's fuses and the trailer's fuses (if applicable).
- Verify that the vehicle's factory wiring connections are secure.
- Intermittent Lights:
- Inspect for loose connections at both the vehicle and trailer ends.
- Check for corrosion on the connector pins; clean if necessary.
- Specific Light Not Working:
- Confirm the trailer bulb for that specific light is not burnt out.
- Check the wiring for that specific function on both the trailer and harness for damage.
- Ground Connection: Ensure the ground wire for the harness is securely attached to a clean, unpainted metal surface on the vehicle chassis. A poor ground connection is a common cause of electrical issues.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | 56473 |
| Brand | Dasbecan |
| Connector Type | 4-pin Trailer Connector |
| Material | Rubber (dust cover) |
| Product Dimensions | 16 x 18 x 8 cm |
| Item Weight | 0.68 Kilograms |
| Included Components | 56473 Trailer Wiring Harness Kit |
8. Warranty and Support
This Dasbecan product comes with a 12-Months-Warranty from the date of purchase.
If you have any questions, require technical assistance, or need to make a warranty claim, please contact us directly via Amazon Message. Our professional customer service team is available to assist you.