1. Product Overview
This USSKYBOY Replacement Relay Harness is designed for use with Atlas Hydraulic Jack Plates manufactured in 2014 and later. It serves as a direct replacement for the AHJRELAYKIT-2-DP, ensuring proper electrical function for your hydraulic jack plate system. The harness is constructed with high-quality materials suitable for maritime applications, offering durability and reliable performance.

Image 1: Overview of the USSKYBOY Replacement Relay Harness, showing the complete assembly with relays, wiring, and connectors.
2. Package Contents
- 1 x Replacement Relay Harness (Model AHJRELAYKIT-2-DP)
3. Compatibility
This replacement relay harness is compatible with the following Atlas Hydraulic Jack Plate models (2014+):
Atlas Series Hydraulic Jack Plates:
- AHJ-4V-DP
- AHJ-6V-DP
- AHJ-8V-DP
- AHJ-10V-DP
- AHJ-12V-DP
- AHJ-14V-DP
- AHJ-4V-B-DP
- AHJ-6V-B-DP
- AHJ-8V-B-DP
- AHJ-10V-B-DP
- AHJ-12V-B-DP
Atlas Heavy Duty Hydraulic Jack Plates:
- AHJ-4VHD-DP
- AHJ-6VHD-DP
- AHJ-8VHD-DP
- AHJ-10VHD-DP
- AHJ-12VHD-DP
- AHJ-14VHD-DP
- AHJ-4VHD-B-DP
- AHJ-6VHD-B-DP
- AHJ-8VHD-B-DP
- AHJ-10VHD-B-DP
- AHJ-12VHD-B-DP
4. Key Features
- Direct Replacement: Specifically designed to replace the AHJRELAYKIT-2-DP for Atlas Hydraulic Jack Plates 2014+.
- Maritime Application: Engineered for use in marine environments.
- Durable Construction: Made from high-quality materials to ensure longevity and reliable operation.
- Easy Assembly: Designed for straightforward installation.
- Optimal Performance: Provides precise fit and excellent performance, matching original equipment specifications.

Image 2: Close-up view of the relay harness, emphasizing the quality of manufacturing, including the flexible wire jacket and sensitive joints.

Image 3: The relay harness shown in a marine setting, illustrating its intended use and highlighting features like easy installation and durable materials.
5. Setup and Installation
Installation of the replacement relay harness should be performed by individuals with appropriate electrical knowledge and experience, especially in marine environments. Always disconnect power to the jack plate system before beginning any installation or maintenance.
General Installation Steps:
- Safety First: Ensure all power to the hydraulic jack plate system is disconnected.
- Locate Existing Harness: Identify the current relay harness connected to your Atlas Hydraulic Jack Plate.
- Disconnect Old Harness: Carefully disconnect all electrical connections of the old harness, noting the position and color coding of wires if necessary.
- Install New Harness: Connect the new USSKYBOY relay harness, ensuring all connections are secure and match the original configuration. The harness features high-quality and sensitive joints for reliable connections.
- Secure Wiring: Route and secure the wiring to prevent chafing or damage from vibration and movement.
- Test System: Reconnect power and test the functionality of the hydraulic jack plate to ensure proper operation.

Image 4: A detailed view of the two relays integrated into the harness, showing their robust construction.

Image 5: A close-up of the high-quality and sensitive joints and connectors, including ring terminals and spade connectors, designed for secure electrical connections.
Installation Video:
Video 1: An official product video demonstrating the USSKYBOY Replacement Relay Harness, showcasing its components and features relevant to installation.
6. Operating Instructions
The relay harness functions as an integral part of your hydraulic jack plate's electrical system, controlling the motor's movement based on commands from your boat's control switch. Once correctly installed, no specific operating instructions are required for the harness itself. The operation of the jack plate will follow its standard procedure as outlined in the jack plate's own user manual.
7. Maintenance
To ensure the longevity and reliable performance of your relay harness, consider the following maintenance tips:
- Regular Inspection: Periodically inspect the harness for any signs of wear, corrosion, or damage, especially to the wiring insulation and connectors.
- Clean Connections: Keep electrical connections clean and free from salt, dirt, and moisture. Use marine-grade dielectric grease on connections to prevent corrosion.
- Secure Mounting: Ensure the relay box and wiring are securely mounted to prevent excessive movement and strain on the connections.
- Avoid Harsh Chemicals: Do not use harsh chemicals or solvents near the harness, as they can degrade the wire insulation and plastic components.
8. Troubleshooting
If your hydraulic jack plate is not functioning correctly after installing the new relay harness, consider the following:
- No Power/Dead System:
- Check all power connections to ensure they are secure and free of corrosion.
- Verify the fuse in the harness is intact and not blown. Replace if necessary with a fuse of the correct rating.
- Confirm the battery has sufficient charge.
- Intermittent Operation:
- Inspect all wire connections for looseness or signs of intermittent contact.
- Check for any damaged or frayed wiring that could cause intermittent power.
- Motor Not Responding:
- Ensure the control switch for the jack plate is functioning correctly.
- If possible, test the jack plate motor directly with a known good power source to rule out motor issues.
If troubleshooting steps do not resolve the issue, it is recommended to consult with a qualified marine technician.
9. Specifications
| Specification | Detail |
|---|---|
| Model Number | AHJRELAYKIT-2-DP |
| Brand | USSKYBOY |
| Material | Polyvinyl Chloride (PVC) |
| Connector Type | Deutsch Dt |
| Item Weight | 15.8 ounces (0.45 Kilograms) |
| Package Dimensions | 5.24 x 5.2 x 1.73 inches |
| Length | 49.53 inches |

Image 6: A visual representation of the relay harness, indicating its overall length of 49.53 inches.
10. Warranty and Support
For warranty information or technical support regarding your USSKYBOY Replacement Relay Harness, please contact the manufacturer directly through their official website or customer service channels. Keep your purchase receipt as proof of purchase.