DNA Motoring HL-HAY-003-BK Dual LED DRL Projector Headlight Lamp Set Instruction Manual

1. Product Overview

The DNA Motoring HL-HAY-003-BK Dual LED DRL Projector Headlight Lamp Set is designed as a direct bolt-on replacement for the stock headlights on 2005-2017 Freightliner Columbia trucks. This set provides a full LED lighting upgrade, enhancing visibility and the aesthetic appeal of your vehicle.

Key features include:

Plug-n-Play Operation: Designed for direct fitment, simplifying installation.
Full LED Lighting Upgrade: Provides bright and efficient illumination.
Dual Projector Beam High & Low Beams: Offers focused and powerful light output for both high and low beam functions.
Halo Ring Daytime Running Lights (DRL): Enhances vehicle visibility during daylight hours.
Amber LED Turn Signals: Clear and distinct signaling for safety.

Diagram of DNA Motoring HL-HAY-003-BK headlight with labeled components — **Figure 1.1:** Overview of the headlight components. This image displays the black housing, high beam projector light, side marker light, LED halo running light, low beam projector light, and signal light, highlighting the design and functional elements of the headlight unit.

Close-up view of the DNA Motoring HL-HAY-003-BK headlight's DRL and projector lenses — **Figure 1.2:** Detailed view of the LED Halo DRL and projector lenses. This image provides a closer look at the illuminated halo rings and the clear projector lenses, demonstrating the modern lighting design.

2. Specifications

Refer to the table below for detailed product specifications:

Feature	Specification
Brand	DNA MOTORING
Model Number	HL-HAY-003-BK
Compatible Vehicle Type	Freightliner Columbia (2005-2017)
Light Source Type	LED
Voltage	12 Volts
Auto Part Position	Front
Lens Color	Black
Lens Material	Plastic
Included Components	1 Pair of Headlights (Left & Right)
Assembly Required	No

3. Setup and Installation

This headlight set is designed for direct bolt-on OE fitment. While installation is generally plug-n-play, professional installation is recommended. Always disconnect the vehicle's battery before beginning any electrical work.

3.1 Pre-Installation Check

Verify that all components are present and undamaged.
Ensure the vehicle is parked on a level surface with the engine off and parking brake engaged.
Gather necessary tools (e.g., screwdrivers, wrenches, trim removal tools).

3.2 Installation Steps (General)

Access Headlight Assembly: Depending on your Freightliner Columbia model, you may need to remove the grille, bumper, or fender liners to access the existing headlight assembly. Refer to your vehicle's service manual for specific instructions.
Disconnect Wiring: Carefully disconnect the electrical connectors from the back of the existing headlight unit.
Remove Old Headlight: Unbolt and remove the factory headlight assembly.
Install New Headlight: Position the new DNA Motoring headlight into the opening. Ensure it seats correctly.
Secure Headlight: Bolt the new headlight into place using the factory mounting points. Do not overtighten.
Connect Wiring: Connect the OE plugs from the vehicle's wiring harness to the corresponding connectors on the new headlight. Ensure connections are secure.
Test Functionality: Before reassembling the vehicle's front end, reconnect the battery and test all headlight functions (low beam, high beam, DRL, turn signals) to ensure proper operation.
Reassemble: Reinstall any removed components (grille, bumper, etc.).

Close-up of headlight wiring and connectors — **Figure 3.1:** Detailed view of the wiring and connectors. This image shows the electrical connections on the back of the headlight, illustrating the plug-n-play design for easy integration with the vehicle's existing harness.

Rear view of the headlight assembly showing foam padding, ABS housing, and OE plug — **Figure 3.2:** Rear view of the headlight unit. This image highlights the foam padding for sealing, the durable ABS housing, and the OE plug designed for direct connection to the vehicle's electrical system.

4. Operating Instructions

Once installed, the DNA Motoring HL-HAY-003-BK headlights operate in conjunction with your vehicle's existing lighting controls.

Daytime Running Lights (DRL): The Halo Ring DRLs will typically activate automatically when the vehicle is running, depending on your vehicle's factory DRL settings.
Low Beam: Activate the low beam headlights using your vehicle's standard headlight switch. The dual projector lenses will provide a focused beam pattern for normal driving conditions.
High Beam: Engage the high beam function via your vehicle's control stalk. The projector high beams will provide maximum illumination for improved visibility on dark roads.
Turn Signals: The amber LED turn signals will flash when activated by your vehicle's turn signal stalk.

DNA Motoring headlight installed on a Freightliner Columbia truck with DRLs illuminated at night — **Figure 4.1:** Headlight installed on a Freightliner Columbia with DRLs active. This image demonstrates the appearance of the LED Halo DRLs when illuminated on the vehicle, enhancing its presence.

Red Freightliner Columbia truck with DNA Motoring headlights installed — **Figure 4.2:** Red Freightliner Columbia truck showcasing the installed headlights. This image provides a broader view of the headlights integrated into the vehicle's design, highlighting their fitment and style.

5. Maintenance

Proper maintenance ensures the longevity and optimal performance of your headlights.

Cleaning: Clean the headlight lenses regularly with a soft cloth and mild soap and water. Avoid abrasive cleaners or harsh chemicals that can damage the lens material.
Inspection: Periodically inspect the wiring connections for any signs of wear, corrosion, or looseness.

5.1 Addressing Headlamp Condensation

Condensation inside headlight assemblies can occur due to various environmental factors. This is often a common occurrence and typically does not affect headlight function.

Information graphic on common causes and solutions for headlamp condensation — **Figure 5.1:** Guide to understanding and resolving headlamp condensation. This graphic details common causes such as temperature changes, humidity, and leaking seals, along with practical solutions to mitigate condensation.

6. Troubleshooting

If you encounter issues with your headlights, consider the following troubleshooting steps:

6.1 Headlight Not Functioning

Check Connections: Ensure all electrical connectors are securely attached to the headlight unit and the vehicle's wiring harness.
Inspect Fuses: Check the vehicle's fuse box for any blown fuses related to the headlights. Replace if necessary.
Verify Power: Use a multimeter to check for power at the headlight connector. If no power, investigate upstream wiring or switches.

6.2 Condensation Inside Headlight

As mentioned in the maintenance section, condensation can occur. If persistent or excessive, follow these steps:

Check Vents: Ensure all vents on the headlight housing are free from blockages.
Evaporate Moisture: Turn on the low beam headlights for approximately 20 minutes to raise the internal temperature and help evaporate condensation.
Remove Bulbs (if applicable): If condensation persists, carefully remove any accessible bulbs to allow moisture to evaporate from inside the housing. A hairdryer on a low heat setting can be used to speed up the process.
Inspect Seals: Check for any leaking seals on bulbs or bulb sockets. Replace if damaged.
Desiccant Packet: Consider placing a moisture-absorbing silica-gel desiccant packet inside the headlight housing if space allows.

7. Warranty and Support

For warranty information or technical support regarding your DNA Motoring HL-HAY-003-BK headlight set, please refer to the documentation provided with your purchase or contact DNA Motoring customer service directly. Keep your proof of purchase for warranty claims.