Freightliner FL70-FL80 Cab Lights

Frequently Asked Questions About Freightliner FL70-FL80 Cab Lights

Will these cab lights fit my Freightliner FL70 or FL80 without modification?

Cab lights in this category are designed to match the factory mounting locations and bracket patterns used on Freightliner FL70 and FL80 models, so most kits install using the existing holes or hardware points on the cab roof or visor. That said, production years can vary slightly in trim and mounting layout, so it's a good idea to check the listed year range and compare bolt patterns to your truck before ordering.

Are these cab lights DOT compliant for on-road use?

Many cab lights are intended as marker or clearance lights and are built to meet DOT and FMVSS 108 standards for color, visibility, and placement. Always check the specific product description for compliance details, since decorative or auxiliary lights may not carry the same certification as standard clearance lights.

What's the difference between LED and incandescent cab lights, and which should I choose?

LED cab lights draw less power, run cooler, and generally last longer than incandescent bulbs, which makes them a popular upgrade for drivers replacing older factory lights. Incandescent lights are usually less expensive upfront but require more frequent bulb replacement. If you're upgrading rather than doing a like-for-like replacement, LED is typically the more durable long-term choice.

Do these lights come with the wiring harness and mounting hardware needed for installation?

This varies by product, so check each listing carefully. Some cab light kits include the harness, connectors, and brackets needed for a direct plug-and-play install, while others are sold as bulb or lens replacements only and will use your existing wiring and housing. If you're replacing a full assembly, confirm whether a harness is included or needs to be purchased separately.

What lens colors and housing finishes are available, and do they affect brightness or visibility?

Cab lights typically come in amber, red, clear, or smoked lens options, and housings are usually available in chrome or black finishes to match your cab's trim. Lens color affects the visible light output and, in some cases, legal use as a marker light, so amber and red are the most common choices for compliance while clear and smoked lenses are often chosen for appearance and paired with colored LED bulbs.