Frequently Asked Questions About Peterbilt 386 Cab Lights

What years of Peterbilt 386 trucks are these cab lights compatible with?

Our Peterbilt 386 cab lights are designed to fit model years 2005-2015. The mounting holes and wiring connections match the factory specifications for these years. However, some 2005 models may require minor modifications to the wiring harness. Always verify your specific truck's configuration before ordering, as some special editions or custom builds may have variations.

Are these cab lights DOT approved and waterproof?

Yes, all our Peterbilt 386 cab lights meet DOT FMVSS 108 requirements for clearance and identification lamps. They feature IP67 waterproof ratings with sealed housings and weather-resistant gaskets. The LED versions include potted circuitry for additional moisture protection. Each light comes with rubber mounting gaskets to prevent water intrusion at the installation points.

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

Installation typically takes 2-3 hours for someone with basic mechanical skills. You'll need a drill with 3/4" and 1" hole saws (for new installations), wire strippers, crimp connectors, electrical tape, and basic hand tools. The lights come with color-coded wiring that matches OEM standards. If replacing existing lights, the process is simpler as mounting holes are already present. Professional installation usually runs $150-$300 if you prefer expert help.

What's the difference between the LED and incandescent options?

LED cab lights offer 50,000+ hour lifespan compared to 2,000 hours for incandescent bulbs. LEDs draw about 80% less power, reducing strain on your electrical system. They also provide instant illumination and better visibility in all weather conditions. Incandescent lights cost less upfront but require more frequent bulb replacements. LED options include amber, red, and clear lens choices, while incandescent typically come in amber only.

Will aftermarket cab lights affect my truck's warranty or resale value?

Installing DOT-approved cab lights typically won't void your warranty, but always check with your dealer first. For resale value, professionally installed cab lights often increase appeal to buyers, especially in commercial applications. Keep all documentation and consider lights that match OEM specifications. Many of our lights use factory-style connectors, making them easy to remove if needed without leaving permanent modifications.