Introduction
This manual provides instructions for the installation, operation, and maintenance of the Aqua Signal Series 33 LED Stern Light, model 33502-7. This LED stern light is designed for marine applications, providing a white light with a 2 nautical mile visibility rating. It features a durable black polycarbonate housing and operates on 12V DC.
Safety Information
Please read and understand all safety instructions before installing or operating this product. Failure to follow these instructions may result in property damage, injury, or death.
- Always disconnect power before performing any installation or maintenance.
- Ensure all wiring connections are secure and properly insulated to prevent short circuits.
- Verify the power supply voltage matches the product's specifications (12V DC).
- Consult with a qualified marine electrician if you are unsure about any part of the installation process.
- This light is intended for stern navigation purposes only. Do not use for other applications.
Package Contents
Verify that all components are present before beginning installation.
- Aqua Signal Series 33 LED Stern Light (Model 33502-7)
- Note: Mounting hardware and additional instruction manuals are not included.
Setup and Installation
The Aqua Signal Series 33 LED Stern Light is designed for side-mount installation. Follow these steps for proper setup.
1. Prepare for Installation
- Choose a suitable mounting location on the stern of your vessel, ensuring it meets all regulatory requirements for navigation light placement and visibility.
- Ensure the mounting surface is clean, flat, and structurally sound.
- Gather necessary tools: drill, drill bits (1/4" diameter), screwdriver, marine-grade sealant, wire strippers, crimpers, and appropriate mounting hardware (not included).
- Disconnect all power to the area where the light will be installed.
2. Mounting the Light
Position the light in the desired location. Mark the two 1/4" diameter mounting hole positions.

Image: Rear view of the Aqua Signal Series 33 LED Stern Light, highlighting the two 1/4" diameter mounting holes and the wiring harness.
Drill pilot holes at the marked locations using a 1/4" drill bit. Apply marine-grade sealant around the drilled holes to prevent water intrusion.
Secure the light to the mounting surface using appropriate marine-grade fasteners (not included). Do not overtighten.

Image: Side view of the Aqua Signal Series 33 LED Stern Light, illustrating its compact design and the wiring connection point. The light is marked with "USCG 2nm" indicating its visibility rating.
3. Wiring Connections
Identify the positive (+) and negative (-) wires from your boat's 12V DC power supply. The light typically comes with two wires: one for positive and one for negative.

Image: Detailed view of the wiring for the Aqua Signal Series 33 LED Stern Light, showing the red (positive) and black (negative) wires ready for connection.
- Connect the positive wire from the light to the positive (+) terminal of your 12V DC power supply.
- Connect the negative wire from the light to the negative (-) terminal of your 12V DC power supply.
- Ensure all connections are made using marine-grade connectors and are properly sealed to prevent corrosion and water damage.
Operating Instructions
The Aqua Signal Series 33 LED Stern Light operates as a standard navigation light.
- Once properly installed and wired, the light will illuminate when power is supplied to its circuit.
- Typically, navigation lights are controlled by a switch on your boat's electrical panel.
- Ensure the light is switched on during periods of restricted visibility or between sunset and sunrise, as required by maritime regulations.
- The light provides a white stern light with a 2 nautical mile visibility range.

Image: Front view of the Aqua Signal Series 33 LED Stern Light, showcasing the white LED illumination.
Maintenance
The Aqua Signal Series 33 LED Stern Light requires minimal maintenance due to its durable construction and LED technology.
- Cleaning: Periodically clean the lens with fresh water and a soft cloth to remove salt, dirt, or grime that may obstruct light output. Avoid abrasive cleaners.
- Inspection: Regularly inspect the light for any signs of physical damage, corrosion, or loose connections. Ensure the mounting remains secure.
- LED Longevity: LED lights are designed for long operational life. If the light fails, it typically indicates an issue with the wiring or power supply rather than the LED itself.
Troubleshooting
If the Aqua Signal Series 33 LED Stern Light is not functioning correctly, refer to the following troubleshooting guide:
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not illuminate. | No power supply. Loose or corroded wiring connection. Blown fuse or tripped circuit breaker. | Check the boat's electrical panel and switch. Inspect all wiring connections for tightness and corrosion. Clean or re-secure as needed. Check and replace any blown fuses or reset circuit breakers. |
| Light flickers or is dim. | Low voltage. Poor wiring connection. Corrosion in the circuit. | Verify the boat's battery voltage is sufficient (12V DC). Inspect wiring for loose connections or damage. Ensure proper gauge wire is used. Clean any corroded terminals or connections. |
| Water inside the light housing. | Improper sealing during installation. Damage to the housing or lens. | Ensure marine-grade sealant was properly applied around mounting holes and wire entry points. Re-seal if necessary. Inspect the housing and lens for cracks or damage. Replace the unit if compromised. |
Specifications
Detailed specifications for the Aqua Signal Series 33 LED Stern Light (Model 33502-7):
- Model: 33502-7
- Manufacturer: Aqua Signal
- Light Type: LED Stern Light
- Illumination Color: White
- Housing Material: Black Polycarbonate
- Voltage Rating: 12V DC
- Wattage: 1.5W
- Visibility: 2 Nautical Miles (USCG approved)
- Overall Dimensions: Approximately 2 5/8" L x 2" W x 1 1/2" D
- Mounting: Side Mount, (2) 1/4" Diameter Holes
- Special Feature: Waterproof
- Item Weight: 4 ounces

Image: Product label for Aqua Signal Series 33 / Side Light, P/N 33502-7, showing key specifications like 12V, 1.5W, 2nm visibility, and side-mount type.
Warranty and Support
Information regarding product warranty and customer support is not provided in the available product data. For warranty claims or technical assistance, please refer to the original point of purchase or contact Aqua Signal directly through their official channels.