1. Introduction
This manual provides essential information for the safe and effective use of your Aero-Lites #303 Miniature LED Replacement Bulb. This LED bulb is engineered as a direct drop-in replacement for 28V AC/DC G6 "globe shape" single-contact bayonet base (Ba15S) filament miniature light bulbs. It offers significant current reduction and enhanced light output, designed for longevity and consistent performance.
2. Safety Information
- Electrical Safety: Always disconnect power to the fixture before installing, removing, or servicing the bulb to prevent electrical shock.
- Proper Voltage: Ensure the fixture's voltage matches the bulb's specified 28V AC/DC. Using incorrect voltage may damage the bulb or fixture.
- Handling: Handle the bulb by its base to avoid touching the glass or LED components directly.
- Disposal: Dispose of old bulbs and packaging responsibly according to local regulations.
3. Product Features
- Direct Replacement: Exact dimensional LED replacement for 28-Volt AC/DC G6 globe-shape, single-contact bayonet base (Ba15S) incandescent bulbs.
- Energy Efficient: Draws only 40mA @28VDC, resulting in an 85% current reduction compared to traditional filament bulbs.
- Dimmable: Features voltage-dependent dimming, allowing the LED to dim as forward voltage decreases.
- Enhanced Light Output: Provides more total lumens and light output while maintaining the exact same light source height for consistent projection.
- Omni-Directional Light: LEDs are oriented for perfectly balanced 360-degree omni-directional light, matching the OEM filament style bulb.
- Long Lifespan: Designed for a life in excess of 10,000 hours.
- Low Heat Generation: Virtually no heat generated during operation.
- Cross-Reference: Replaces filament bulb numbers: 303, 304, 303X, 623, 1251.
4. Setup and Installation
Follow these steps to install your Aero-Lites #303 LED Replacement Bulb:
- Power Off: Ensure the power supply to the light fixture is completely turned off at the circuit breaker or switch.
- Remove Old Bulb: Carefully remove the existing incandescent bulb from the fixture. Allow it to cool if it was recently in use.
- Insert LED Bulb: Align the bayonet base (Ba15S) of the Aero-Lites LED bulb with the socket. Push the bulb gently into the socket and twist clockwise until it locks into place.
- Restore Power: Once the bulb is securely installed, restore power to the fixture.
- Test: Turn on the light switch to verify proper operation.

Figure 1: Aero-Lites #303 Miniature LED Replacement Bulb. This image shows the compact design of the LED bulb with its bayonet base, ready for installation.

Figure 2: Comparison of the Aero-Lites LED bulb (left) and a traditional incandescent filament bulb (right). This illustrates the identical form factor for easy replacement.
5. Operating Instructions
The Aero-Lites #303 LED Replacement Bulb operates like a standard light bulb. Simply use the existing light switch to turn it on or off.
- Dimming Functionality: This bulb supports voltage-dependent dimming. If your fixture has a compatible dimmer, the LED will dim as the forward voltage decreases. Ensure your dimmer is suitable for LED loads for optimal performance.

Figure 3: The Aero-Lites #303 LED bulb illuminated with red light. This demonstrates the specific color output of the red variant.
6. Maintenance
The Aero-Lites #303 LED Replacement Bulb requires minimal maintenance due to its long lifespan and durable design.
- Cleaning: If cleaning is necessary, ensure the power is off and the bulb is cool. Gently wipe the bulb with a soft, dry cloth. Do not use liquid cleaners or abrasive materials.
- Replacement: Replace the bulb only when it reaches the end of its operational life. Follow the installation steps in Section 4 for replacement.
7. Troubleshooting
If you encounter issues with your Aero-Lites #303 LED Replacement Bulb, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Bulb does not light up. |
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| Bulb flickers or dims unexpectedly. |
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8. Specifications
| Specification | Detail |
|---|---|
| Brand | Aero-Lites - HIGH PERFORMANCE LED DESIGNS |
| Model | #303 Miniature Bulb LED Replacement |
| Input Voltage | 28V AC/DC |
| Current Draw | 40mA @28VDC |
| Wattage | 1.12 Watts |
| Dimmable | Yes (Voltage Dependent) |
| Light Projection | 360° Omni-directional |
| Color Temperature | 6,000K (Pure White) - Note: Product variant is Red. |
| Light Color | Red |
| Polarity | Bipolar |
| Bulb Base | Ba15S (Single-Contact Bayonet) |
| Bulb Shape Size | G6 (Globe Shape) |
| Lifespan | >10,000 hours |
| Material | Copper |
| Item Weight | 0.2 ounces |
| Replaces Bulbs | 303, 304, 303X, 623, 1251 |
9. Warranty and Support
Aero-Lites is committed to providing high-quality products. For warranty information or technical support, please contact Aero-Lites directly through their official website or the retailer where the product was purchased. Please have your purchase details and product model number ready when contacting support.
For more information, visit the Aero-Lites Store on Amazon.