Frequently Asked Questions About Peterbilt 387 Driving Lights

What years of Peterbilt 387 trucks are these driving lights compatible with?

Our Peterbilt 387 driving lights are designed to fit model years 2000-2010. The mounting brackets and wiring harnesses are specifically engineered for the 387's bumper design during these production years. If you have a 1999 or earlier model, you may need additional adapter brackets, which we can help you identify. Always double-check your truck's VIN and model year before ordering to ensure proper fitment.

How difficult is the installation process, and what tools will I need?

Installation typically takes 2-3 hours for someone with basic mechanical skills. You'll need a drill with metal bits (typically 3/8" and 1/2"), a socket set, wire strippers, electrical tape, and zip ties. Most installations require drilling 2-4 mounting holes in your bumper. The trickiest part is usually routing the wiring through the firewall - we recommend using existing grommets when possible. Professional installation runs about $150-250 if you prefer to have a shop handle it.

What's the difference between halogen and LED driving lights for my 387?

LED lights draw 60-70% less power (important for battery life during extended idling), last 30,000-50,000 hours versus 500-1,000 for halogens, and provide instant full brightness. However, LEDs cost 2-3 times more upfront. Halogen lights are cheaper to replace, provide a warmer light color that some drivers prefer in fog, and generate heat that can help melt ice buildup. Consider your typical routes, weather conditions, and budget when choosing.

Will aftermarket driving lights void my warranty or cause DOT compliance issues?

Properly installed auxiliary driving lights that meet SAE J583 standards are DOT compliant. However, they must be wired to shut off automatically when high beams are activated in most states. Check your state's specific regulations, as some limit the number of forward-facing lights or require specific mounting heights. As for warranty, aftermarket lights typically won't affect your drivetrain warranty, but any electrical issues traced to improper installation could void electrical component coverage.

What size and style driving lights look best on the Peterbilt 387 bumper?

The 387's bumper design accommodates 6-inch round lights best, though 4-inch rounds and 5"x7" rectangular lights also work well. Chrome housings complement the truck's classic styling, while black housings suit murdered-out builds. For balanced appearance, mount lights 16-24 inches apart, centered on the bumper. Many drivers prefer matching their driving light finish to their mirror brackets and air cleaner for a cohesive look. Stone guards are recommended for durability but slightly reduce light output.