1. Product Overview
The Diode Dynamics HP48 Backup LEDs are designed as a direct replacement for the reverse light bulbs in Dodge Avenger models from 2008 to 2010. These LED bulbs provide a brighter, cool white light output, significantly improving visibility when backing up. They feature an omnidirectional design with 48 LEDs, ensuring broad light distribution. The installation is a simple plug-and-play process, requiring no modifications to the vehicle's existing wiring or housing.
This product is intended as a cosmetic upgrade and to enhance functional visibility during reverse maneuvers.

Figure 1.1: Diode Dynamics HP48 Backup LED Bulbs (Pair)
2. Package Contents
Upon opening the package, please verify that all components are present and undamaged:
- 2 x Diode Dynamics HP48 3157 LED Backup Bulbs

Figure 1.2: Contents of the Diode Dynamics HP48 LED package
3. Installation Guide
The installation of Diode Dynamics HP48 Backup LEDs is designed to be straightforward. It is a direct replacement for your vehicle's factory 3157 reverse light bulbs. No wiring modifications or additional resistors are typically required.
3.1 Safety Precautions
- Ensure the vehicle's ignition is off and the parking brake is engaged before beginning installation.
- Allow the vehicle's existing bulbs to cool down if they have been recently in use, as they can be hot.
- If you are unsure about any step, it is recommended to consult a professional automotive technician.
3.2 Installation Steps
- Locate Reverse Light Access: Refer to your Dodge Avenger's owner's manual to identify the location of the reverse light bulbs and how to access them. This typically involves accessing the rear light assembly from inside the trunk or by removing a portion of the taillight housing.
- Remove Factory Bulb: Once access is gained, carefully twist and pull out the existing 3157 reverse light bulb from its socket.
- Insert Diode Dynamics LED: Take one Diode Dynamics HP48 LED bulb and carefully insert it into the empty socket. Ensure it is fully seated.
- Test Functionality: Before reassembling the light housing, turn on your vehicle's ignition and engage reverse gear (with the parking brake still engaged) to test if the new LED bulb illuminates. If it does not light up, remove the bulb, rotate it 180 degrees, and reinsert it. LEDs are polarity sensitive and may only work in one orientation.
- Repeat for Second Bulb: Follow steps 1-4 for the other reverse light bulb.
- Reassemble: Once both bulbs are confirmed to be working, carefully reassemble the light housing and any panels that were removed during the access process.
4. Operation
Once installed, the Diode Dynamics HP48 Backup LEDs operate automatically with your vehicle's reverse lighting system. When the vehicle is shifted into reverse, the LED bulbs will illuminate, providing enhanced illumination behind the vehicle. The cool white light output offers improved clarity and visibility compared to standard incandescent bulbs.

Figure 1.3: Diode Dynamics HP48 LED bulb illuminated
5. Maintenance
Diode Dynamics HP48 Backup LEDs are designed for long-term reliability and require minimal maintenance. They are built with constant-current inductive circuitry and transient suppression to ensure durability and consistent performance over years of use.
- Cleaning: If the bulbs become dirty during handling, gently wipe them with a clean, dry, lint-free cloth. Avoid using abrasive cleaners or solvents.
- No User-Serviceable Parts: The LED bulbs contain no user-serviceable parts. Do not attempt to disassemble them.
- Longevity: Due to their robust design and LED technology, these bulbs are expected to last significantly longer than traditional incandescent bulbs.
6. Troubleshooting
If you encounter issues with your Diode Dynamics HP48 Backup LEDs, please refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| LED does not light up. | Incorrect polarity. | Remove the LED bulb, rotate it 180 degrees, and reinsert it into the socket. Test again. |
| LED flickers or turns off intermittently. | Loose connection or unstable voltage. | Ensure the bulb is securely seated in the socket. Check vehicle's electrical system for stable voltage. |
| Only one LED lights up. | One bulb is faulty or incorrectly installed. | Re-check installation for the non-working bulb (polarity, secure connection). If issue persists, the bulb may be faulty. |
| Vehicle displays a "bulb out" warning. | Vehicle's CANbus system detects lower power draw from LED. | While these bulbs are generally plug-and-play, some sensitive vehicle systems may require additional load resistors (not included) to prevent "bulb out" warnings. This is rare for reverse lights. |
If these steps do not resolve the issue, please contact Diode Dynamics customer support for further assistance.
7. Specifications
| Feature | Detail |
|---|---|
| Product Name | HP48 Backup LEDs |
| Model Number | DD0057P |
| Bulb Type | 3157 |
| Lumen Output | 250 lumens (per pair) |
| Compatibility | Dodge Avenger 2008-2010 (Reverse Lights) |
| LED Count | 48 LEDs (omnidirectional design) |
| Installation | Plug and Play |
| Manufacturer | Diode Dynamics |
| Item Weight | 2.88 ounces |
| Product Dimensions | 6 x 10 x 1 inches |
8. Warranty and Support
8.1 Warranty Information
For specific warranty details, including coverage period and terms, please refer to the official Diode Dynamics website or contact the seller (DD-Warehouse) directly. Generally, products purchased may be eligible for a refund or replacement within 30 days, subject to the seller's return policy.
8.2 Customer Support
If you require technical assistance, have questions about installation, or need to report a defective product, please contact Diode Dynamics customer support. You can typically find contact information on their official website:
Visit Diode Dynamics Official Website
Alternatively, you may contact the seller, DD-Warehouse, through the Amazon platform for order-specific inquiries.