Frequently Asked Questions About International WorkStar Cab Lights

Which model years of International WorkStar trucks are compatible with these cab lights?

Our International WorkStar cab lights are designed to fit 2008-2017 WorkStar models, including the 7300, 7400, 7500, and 7600 series. The mounting patterns changed slightly after 2017, so newer models may require additional modification or adapter plates. Always verify your specific truck's year and model number before ordering to ensure proper fitment.

What's the difference between LED and incandescent cab lights for my WorkStar?

LED cab lights offer 50,000+ hour lifespan compared to 2,000 hours for incandescent bulbs, draw less power (reducing alternator strain), and provide brighter, more consistent illumination. While LED options cost more upfront, they eliminate frequent bulb replacements and reduce long-term maintenance costs. Incandescent lights remain popular for their lower initial price and warm light color that some drivers prefer.

Do I need to drill new holes to install aftermarket cab lights on my WorkStar?

Most WorkStar trucks come pre-drilled with standard 5-light cab marker positions from the factory. If your truck has existing cab lights, replacement typically requires no drilling. For trucks without factory cab lights, you'll need to drill five evenly-spaced holes across the cab roof. We recommend using a template and center punch to ensure proper spacing and alignment before drilling.

Are these cab lights DOT compliant for commercial use?

Yes, all cab lights we carry for International WorkStar trucks meet DOT FMVSS 108 requirements for clearance and identification lamps. They feature the required amber color for front-facing lights and include proper SAE/DOT markings on the lens. This compliance is essential for passing commercial vehicle inspections and avoiding citations during roadside checks.

What wiring modifications are needed when upgrading from incandescent to LED cab lights?

LED cab lights are designed as direct replacements and work with your WorkStar's existing 12V wiring harness. No resistors or special adapters are needed. Simply disconnect the old lights, connect the new LED units using the same ground and power connections, and secure with the provided hardware. The lower amp draw of LEDs actually reduces stress on your truck's electrical system compared to traditional bulbs.