Best Cab Lights for Peterbilt 389 — LED Upgrade Guide
Why Upgrade Peterbilt 389 Cab Lights?
Cab lights (also called roof lights or clearance lights) are one of the most visible upgrades on any Peterbilt 389. Switching from incandescent to LED cab lights gives you brighter illumination, lower power consumption, and a cleaner look — especially at night when your truck is really on display.
Types of Cab Lights for the 389
- Standard amber LED cab lights — direct replacement for factory lights
- Dual-color cab lights — amber running light with brighter amber or white turn/signal mode
- Watermelon-style cab lights — rounded LED design popular with show trucks
What You Need for the Swap
- 5 cab light assemblies (the 389 uses a 5-light configuration)
- Gaskets (always replace gaskets to prevent leaks)
- Wiring harness (if switching from incandescent to LED, you may need a load resistor or LED-compatible harness)
Installation Tips
Cab light replacement on a 389 takes about 1-2 hours. The biggest challenge is accessing the roof area safely. Tips:
- Use a stable ladder or work from the catwalk
- Apply silicone sealant around the base after installing new gaskets
- Test each light before sealing to confirm wiring polarity
Shop Cab Lights
See also: All Peterbilt 389 LED Lights | All 389 Parts