Kenworth W900A Cab Lights
Frequently Asked Questions About Kenworth W900A Cab Lights
What years and models are these cab lights compatible with?
Our Kenworth W900A cab lights are designed to fit W900A models from 1961 through 1985. These lights are also compatible with W900B models (1982-1987) that share the same cab roof profile. However, they will not fit the newer W900L or W900S models due to different roof angles and mounting configurations. Always verify your specific model year and cab style before ordering.
Are these cab lights DOT approved and what bulb types do they use?
Yes, all our W900A cab lights meet or exceed DOT/SAE requirements for clearance and identification lighting. Most models use standard 194 or 168 wedge-base bulbs, though some LED options are available with integrated diodes. The lights typically operate on 12V systems, and we recommend using amber bulbs for the front three positions and red for the rear two to maintain DOT compliance.
How difficult is the installation process and what tools are required?
Installation typically takes 2-4 hours for someone with basic mechanical skills. You'll need a drill with step bits (usually 3/4" to 1" depending on the light model), a center punch, masking tape, silicone sealant, and basic hand tools. The biggest challenge is ensuring proper spacing and alignment - we recommend creating a cardboard template first. Pre-wired kits include detailed instructions and drilling templates to simplify the process.
What's the difference between the teardrop, watermelon, and bullet style lights?
Teardrop lights feature the classic pointed oval shape and were factory equipment on many W900As from the late 60s through early 80s. Watermelon lights have a rounder, fuller profile and were common on mid-70s models. Bullet style lights are more streamlined and aerodynamic, popular on later W900A builds. All three styles mount the same way and provide identical lighting function - the choice is purely aesthetic based on your truck's era and personal preference.
Do these lights come with wiring harnesses and mounting hardware?
It depends on the kit you select. Our complete cab light kits include pre-assembled wiring harnesses with weatherproof connectors, mounting gaskets, screws, and detailed instructions. Individual replacement lights typically include just the light assembly and gasket - you'll need to reuse existing wiring or purchase a harness separately. We offer both options to accommodate full installations and single light replacements.