Peterbilt 359 LED Headlights

Frequently Asked Questions About Peterbilt 359 LED Headlights

Will these LED headlights fit my specific year Peterbilt 359?

Our LED headlights are designed to fit all Peterbilt 359 models from 1967 to 1987. They use the standard 7-inch round housing that's compatible with the original sealed beam mounting system. However, trucks with custom grilles or non-standard headlight bezels may require additional modifications. We recommend checking your current headlight diameter and mounting depth before ordering.

Do I need to upgrade my wiring or add resistors when switching to LED?

Most Peterbilt 359 trucks will not require wiring upgrades for basic LED headlight installation. Our LED headlights are designed to work with standard 12V systems. However, some older trucks may experience hyperflashing or dashboard warnings without load resistors. Resistors are available separately if needed for your specific truck.

How difficult is the installation process?

Installation typically takes 30-45 minutes per side for someone with basic mechanical skills. The process involves removing the headlight bezel, unplugging the old sealed beam, installing the new LED unit, and reassembling. The most common challenge is accessing the mounting screws behind the bezel on some model years. No cutting or drilling is required, and all necessary hardware is included.

What's the actual brightness difference compared to stock halogen lights?

Our LED headlights produce approximately 3,200 lumens on low beam and 4,800 lumens on high beam, compared to roughly 1,000/1,650 lumens from standard halogen sealed beams. This translates to about 3x more usable light on the road. The beam pattern is DOT-approved and designed to prevent blinding oncoming traffic while significantly improving your night visibility.

Are these truly waterproof for long-term durability?

Yes, our LED headlights feature IP67 waterproofing, meaning they're completely sealed against dust and can withstand water immersion up to 1 meter. The housing uses a polycarbonate lens with UV coating to prevent yellowing, and all connections use weatherproof connectors. We back this with a 2-year warranty against water damage and LED failure under normal use conditions.