Freightliner Century 112/120 Cab Lights

Frequently Asked Questions About Freightliner Century 112/120 Cab Lights

Will these cab lights fit my Freightliner Century 112 or 120 without modification?

These cab lights are designed to match the factory mounting locations on the Century 112 and 120 models, so they typically bolt into the existing holes on the cab and visor. However, production years and prior body repairs can introduce slight variations, so it is a good idea to compare the light housing dimensions and mounting hole spacing to your truck before installing.

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

Most cab lights in this category are amber or clear marker lights intended for clearance and identification purposes, and they generally meet FMVSS 108 requirements when the correct color and lens combination is used. Always confirm the specific bulb color required for the mounting position on your truck, since local and federal regulations dictate where amber versus red lenses must be used.

Do these lights come with the wiring harness and bulbs included, or do I need to buy those separately?

This varies by listing, so check the product description carefully. Some cab lights are sold as complete kits with a wiring harness and bulbs included, while others are sold as the light housing only, requiring you to reuse your existing harness or purchase bulbs separately.

What is 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, making them a popular upgrade for drivers who want reduced maintenance over time. Incandescent lights tend to cost less upfront and closely match the original factory look, which matters to owners restoring a truck to stock appearance.

How difficult is it to install replacement cab lights myself?

Installation is usually straightforward and involves removing the old light assembly, disconnecting the wiring, and mounting the new light in the same location using the factory hardware. Basic hand tools are typically all that is needed, though working at cab height may require a ladder or step stool, and it is worth testing the electrical connection before fully securing the housing.