1. Product Overview
The NOCO GCP1 is a 125-volt AC port plug, power inlet, and waterproof electrical outlet designed for various applications. It features a 16-inch integrated outdoor extension cord, offering flexibility and ease of installation without requiring cable modifications or hand wiring. Its ultra-low-profile design ensures seamless integration, and a pressure-fit cap provides a watertight seal. This product simplifies access to onboard battery charging ports, engine block heaters, and outdoor electrical outlets.
Image: The NOCO GCP1 15A AC Port Plug, showing the main unit with its integrated 16-inch extension cord and male plug.
2. Package Contents
Verify that all items are present in the package:
- GCP1 AC Port Plug Charge Inlet with 16-Inch Integrated Extension Cable
- (3) 1-Inch Self-Tapping Screws
3. Features
- AC Port Plug: A 125-volt power inlet socket with an integrated 16-inch outdoor extension cord for various applications including cars, boats, marine vehicles, trucks, trailers, pickups, RVs, industrial, and general electrical uses.
- Waterproof: Features a rugged, waterproof AC electrical power inlet receptacle with a pressure-fit rubberized cover, rated for outdoor use and protection against environmental elements.
- Peak Performance: Rated at 15-amps with heavy-duty 14 AWG copper wiring to maximize power flow and full-sized AC port prongs for optimal conductivity.
- Plug-N-Play: A simple flush-mount flanged power inlet that is easy to install, requiring no cable modification or hand wiring. It mounts into a standard 2-inch hole size.
- Multiple Uses: An outdoor extension cord designed for various applications, including onboard battery chargers, bumpers for engine block heaters, and outdoor electrical outlets.
Image: Close-up view of the NOCO GCP1 showing its waterproof design with a pressure-fit cap, indicating protection against water splashes.
Image: Side profile of the NOCO GCP1 illustrating its low-profile design with dimensions of 1.8 inches (46mm) depth and 2.1 inches (53mm) overall length.
4. Safety Information
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, 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.
Always follow local electrical codes and safety guidelines during installation and use. Ensure the power source is disconnected before installation or maintenance. Do not exceed the rated electrical capacity of 15-amps, 125-volts.
5. Setup and Installation
The GCP1 is designed for straightforward flush-mount installation. No pre-drilling is required for the self-tapping screws when installing into appropriate materials.
- Select Location: Choose a suitable flat surface for mounting the port plug. Ensure there is sufficient clearance behind the mounting surface for the 16-inch integrated extension cable.
- Drill Hole: Using a 2-inch (50.8mm) hole saw, drill a clean circular hole at the selected mounting location.
- Insert Plug: Carefully insert the NOCO GCP1 into the drilled hole, ensuring the flange sits flush against the mounting surface.
- Secure with Screws: Use the three included 1-inch self-tapping screws to secure the port plug firmly in place. These screws are suitable for fiberglass, wood, plastic, and metal.
- Route Cable: Route the 16-inch integrated extension cable to your desired power connection point (e.g., battery charger, engine block heater).
Image: Diagram illustrating the easy installation process, showing a drill with a 2-inch hole saw, the NOCO GCP1, and the mounting screws.
Image: Illustration demonstrating the use of self-tapping screws for installation, highlighting that no pre-drilling is needed for certain materials like fiberglass, wood, plastic, and metal.
Image: Technical drawing showing the dimensions of the NOCO GCP1 and its 16-inch integrated cable, including mounting hole size and overall measurements.
6. Operating Instructions
The NOCO GCP1 is designed for simple plug-and-play operation.
- Open Cap: Lift the pressure-fit rubberized cap to expose the AC inlet.
- Connect Extension Cord: Insert any standard extension cord with a Type-B plug into the GCP1's AC inlet. The GCP1 is rated for 15-amps and 125-volts.
- Power Device: Once connected, the GCP1 provides a convenient and accessible power inlet for your desired electrical application, such as charging batteries or powering engine block heaters.
- Close Cap: When not in use, ensure the pressure-fit cap is securely closed to maintain the waterproof seal and protect the inlet from elements.
Image: Visual representation of the plug-and-play functionality, showing an orange extension cord plugging into the NOCO GCP1, with text "NO HARDWIRING NEEDED".
7. Maintenance
The NOCO GCP1 requires minimal maintenance due to its durable and waterproof design. Regularly inspect the unit for any signs of damage or wear, especially the rubberized cap and the integrity of the mounting. Keep the inlet free from dirt, debris, and moisture by ensuring the cap is always securely closed when not in use. Clean the exterior with a damp cloth as needed.
8. Troubleshooting
- No Power:
- Ensure the external extension cord is properly connected to the GCP1 and to a live power outlet.
- Check the circuit breaker or fuse for the power outlet.
- Verify that the device connected to the GCP1 is functioning correctly.
- Loose Connection:
- If the plug feels loose, ensure the extension cord is fully inserted and that the prongs are not bent or damaged.
- Inspect the GCP1's internal contacts for any obstruction or damage.
- Water Leakage:
- Ensure the pressure-fit cap is fully and securely closed when the unit is not in use.
- Check the mounting area for any gaps or damage that could compromise the seal.
If issues persist, contact NOCO customer support for further assistance.
9. Specifications
| Manufacturer | NOCO |
| Model | GCP1 |
| Voltage Rating | 125 Volts |
| Current Rating | 15 Amps |
| Wire Gauge | 14 AWG |
| Product Dimensions | 5.2 x 2.64 x 5.35 inches |
| Item Weight | 7.5 ounces |
| Mounting Hole Size | 2 inches (approx.) |
| First Available Date | September 13, 2012 |
10. Warranty and Support
For warranty information, product registration, or technical support, please visit the official NOCO website or contact their customer service department. Keep your purchase receipt for warranty claims.
NOCO Official Website: www.no.co


