Kenworth W900A Lights

Frequently Asked Questions About Kenworth W900A Lights

Will these lights fit my specific year model W900A, and what about W900B or W900L models?

Most aftermarket lights for the W900A are designed to fit models from 1961-1990. However, mounting locations and wiring can vary between early (1961-1975) and later (1976-1990) models. While some lights are interchangeable with W900B models, the W900L has different mounting dimensions for certain applications. Always verify the specific years listed in the product description, and when in doubt, measure your existing light housing dimensions or contact us with your OEM for confirmation.

Are LED conversions worth it over traditional sealed beam lights, and will they work with my truck's electrical system?

LED conversions offer 3-5 times longer lifespan, draw 60-80% less power, and provide brighter, whiter light output compared to sealed beams. Most LED headlights are designed to work with standard 12V systems without modifications. However, trucks with older 6V systems or those without proper grounding may experience flickering or radio interference. We recommend checking your alternator output and ensuring clean ground connections before installation. Anti-flicker modules are available for trucks experiencing issues.

What's involved in installing these lights - can I do it myself or do I need a shop?

Most headlight and marker light replacements are plug-and-play installations that take 30-60 minutes with basic tools. You'll typically need screwdrivers, possibly a socket set, and electrical contact cleaner. The main challenges include accessing lights behind the grille (which may require partial removal), dealing with corroded connectors on older trucks, and properly aiming headlights after installation. Full light bar or custom installations may require drilling and wiring work best left to professionals.

How do I know if I need DOT-approved lights, and what's the difference in quality?

DOT approval is legally required for all lights used on public roads. DOT-approved lights meet federal standards for beam pattern, intensity, and durability. Non-DOT lights may be brighter but can blind oncoming traffic and result in inspection failures or citations. Look for the "DOT" marking molded into the lens. Quality varies significantly - premium brands like Truck-Lite and Peterson use better housings, seals, and LEDs that resist moisture intrusion and vibration damage common in cheaper alternatives.

My headlight buckets are rusted or damaged - can I still upgrade my lights?

Damaged buckets are a common issue on W900A trucks. You have three options: replace the entire bucket assembly (recommended for severe rust), use bucket repair rings for minor damage, or convert to a different mounting style altogether. Stainless steel bucket upgrades are available and prevent future rust issues. Some LED headlights include new mounting rings that can work around minor bucket damage. For extensive rust, addressing the bucket issue first ensures proper light alignment and prevents water intrusion.