Volvo VNL Gen II Lights

Frequently Asked Questions About Volvo VNL Gen II Lights

Will these lights fit my 2018-2024 Volvo VNL, and are there differences between model years?

The Volvo VNL Gen II lights are specifically designed for 2018 and newer VNL models. While the mounting points remain consistent across these years, there are minor differences in wiring harnesses between early 2018 models and 2019+ trucks. Most aftermarket lights come with adapter harnesses to ensure compatibility. Always verify your specific VNL configuration (740, 760, 860) as some specialty lights may have different fitment requirements based on sleeper size and roof height.

Do I need to splice wires or modify my truck's electrical system to install aftermarket LED lights?

Most quality aftermarket LED lights for the VNL Gen II are designed as plug-and-play replacements that connect directly to your existing wiring harnesses. However, if you're adding auxiliary lights or light bars that didn't come factory-installed, you'll need to run new wiring with appropriate fuses and relays. We recommend using weatherproof connectors and following the manufacturer's amp rating guidelines. Professional installation typically takes 30-60 minutes for direct replacements and 2-4 hours for auxiliary lighting additions.

What's the actual difference between OEM-style replacement lights and upgraded LED options?

OEM-style lights maintain the factory appearance and typically use standard halogen or basic LED bulbs with plastic lenses. Upgraded LED options feature polycarbonate lenses, aluminum housings, and advanced LED chips that produce 2-3 times more light output while drawing less power. Premium LEDs also offer better color temperature (5000-6500K for crisp white light), longer lifespan (50,000+ hours vs 10,000 for standard), and often include features like sequential turn signals or switchback functionality. The initial cost difference is usually recovered through fuel savings and reduced replacement frequency.

How do I prevent moisture buildup and fogging in my new headlights?

Quality aftermarket lights should feature breather vents and proper sealing to prevent moisture issues. During installation, ensure all gaskets are properly seated and use dielectric grease on electrical connections. If you experience fogging, check that the breather vents aren't clogged and that the housing hasn't been cracked during installation. Some drivers drill a small (1/8") weep hole at the lowest point of the housing for drainage, though this voids most warranties. Avoid pressure washing directly at light seals, and consider adding a thin bead of clear silicone around the lens perimeter as extra insurance.

Are chrome, black, or custom finish lights DOT compliant, and will they pass inspection?

DOT compliance depends on the light's function and output, not its housing color or finish. Look for lights marked with "DOT" or "SAE" stamps on the lens. Chrome and black housings are typically legal as long as the lens colors meet regulations (clear/white for headlights, amber for front turns, red for rear). Custom LED colors like blue or green are generally not street legal for forward-facing lights. Most states require headlights to produce white light between 3000K-6000K color temperature. Always verify your state's specific requirements, as some have additional rules about light height, quantity, and aftermarket modifications.