1. Introduction
This manual provides essential instructions for the installation, operation, and maintenance of your Maxxima M90450 White 7" Round Bus LED Backup Light. Designed for demanding bus applications, this light offers powerful illumination for enhanced safety during reverse operations. Please read this manual thoroughly before installation and use to ensure proper function and longevity of the product.
2. Safety Information
Observe the following safety precautions to prevent injury or damage to the product and vehicle:
- Always disconnect the vehicle's battery before performing any electrical work.
- Ensure proper wiring connections to avoid short circuits or electrical hazards.
- Wear appropriate personal protective equipment, such as safety glasses and gloves, during installation.
- Do not modify the product. Unauthorized modifications may compromise safety and void the warranty.
- Consult a qualified professional if you are unsure about any installation steps.
3. Package Contents
Verify that all items are present before beginning installation:
- 1 x Maxxima M90450 White 7" Round Bus LED Backup Light
- 1 x Mounting Gasket
4. Installation Instructions
The Maxxima M90450 is designed for a standard 4-hole surface mount. Follow these steps for proper installation:
- Preparation: Choose a suitable mounting location on the vehicle's exterior, typically at the rear, ensuring it is flat and provides adequate clearance.
- Drilling: Use the light as a template to mark the four mounting holes and a central hole for wiring. Drill pilot holes for the mounting screws and a larger hole for the wiring.
- Wiring: The light features 2 wire leads. Connect the positive wire (typically red) to the vehicle's reverse light circuit and the negative wire (typically black) to a reliable ground point on the vehicle chassis. Ensure all connections are secure and insulated.
- Mounting: Place the included mounting gasket between the light and the vehicle surface. Align the light with the drilled holes and secure it using appropriate fasteners (not included) through the four mounting holes. Tighten screws evenly to ensure a watertight seal with the gasket.
- Testing: Reconnect the vehicle's battery. Engage reverse gear (with the parking brake applied and vehicle safely secured) to test the light's functionality.

5. Operating Instructions
The Maxxima M90450 LED Backup Light operates automatically when properly connected to your vehicle's reverse light circuit. When the vehicle is shifted into reverse, the light will illuminate, providing bright white light for improved visibility.
6. Maintenance
The Maxxima M90450 LED Backup Light is designed for durability with sealed, moisture-proof electronics and a rugged polycarbonate lens and housing, requiring minimal maintenance.
- Cleaning: Periodically clean the lens with a soft cloth and mild soap and water to ensure maximum light output. Avoid abrasive cleaners.
- Inspection: Regularly check the mounting screws for tightness and the wiring for any signs of wear or damage.
7. Troubleshooting
If the LED backup light is not functioning as expected, consider the following:
- Light does not illuminate:
- Check the vehicle's fuse for the reverse light circuit.
- Verify all wiring connections (positive, negative, and ground) are secure and free from corrosion.
- Ensure the vehicle is properly shifted into reverse.
- Light is dim or flickers:
- Inspect wiring for loose connections or damage.
- Check the vehicle's electrical system for proper voltage (12.8VDC).
- Clean the lens if it is dirty.
If issues persist after troubleshooting, contact Maxxima customer support or a qualified technician.
8. Specifications
| Feature | Detail |
|---|---|
| Model | M90450 |
| LED Count | 20 White LEDs |
| Mounting | Standard 4-Hole Surface Mount |
| Connection | 2 Wire Leads |
| Voltage | 12.8VDC |
| Amp Draw | 250mA |
| Dimensions | 7.0" Diameter x 1.2" Depth (7.3 x 7.1 x 1.8 inches overall) |
| Lens Material | Polycarbonate |
| Housing Material | Polycarbonate |
| Special Features | Sealed Moisture Proof Electronics, Waterproof |
| Compliance | DOT/SAE J593 |
| Weight | 11.2 ounces |
9. Warranty and Support
The Maxxima M90450 White 7" Round Bus LED Backup Light is backed by a 5-year warranty. For technical support, warranty claims, or further assistance, please contact Maxxima customer service. Keep your purchase receipt as proof of purchase.
For more information, visit the official Maxxima website or refer to your product packaging.





