Frequently Asked Questions About Mack R Truck Cab Lights

What years and models of Mack R trucks are these cab lights compatible with?

Our Mack R truck cab lights are designed to fit Mack R model trucks from 1987 through 2004. This includes all R600, R688, and R690 series trucks. The mounting holes and wiring configurations match the factory specifications for these model years. If you have an earlier R model (pre-1987), please contact our support team as some modifications may be required for proper fitment.

Are these cab lights DOT approved and what materials are they made from?

Yes, all our Mack R cab lights meet or exceed DOT/SAE requirements for commercial vehicles. The housings are constructed from heavy-duty polycarbonate or die-cast aluminum, depending on the style you choose. Polycarbonate options offer excellent impact resistance and UV protection, while aluminum versions provide maximum durability in harsh conditions. All lenses are made from shatterproof acrylic that resists yellowing and cracking.

How difficult is the installation process and what tools are required?

Installation typically takes 1-2 hours for someone with basic mechanical skills. You'll need a drill with 3/8" and 1/2" bits, wire strippers, electrical tape or heat shrink tubing, and basic hand tools. Most lights come with templates for drilling new holes if needed. The wiring connects to your existing cab light circuit - we recommend using a test light to identify the correct wires. Detailed instructions are included with each set.

What styles and lens colors are available for Mack R cab lights?

We offer several styles including the classic teardrop shape, rectangular, and round designs. Lens colors available are amber (most common for visibility), clear, red, and smoked. Chrome-plated, black powder-coated, and polished stainless steel bezels are available depending on the model. Some customers prefer the OEM-style amber teardrop lights, while others choose LED upgrades in rectangular housings for improved brightness and longevity.

Do these lights come with LED or incandescent bulbs, and can they be upgraded?

Our cab lights are available in both LED and incandescent versions. LED models draw less power (typically 0.5 amps vs 2 amps for incandescent), last up to 50,000 hours, and provide brighter illumination. Incandescent models can be upgraded to LED by replacing the bulbs with compatible LED replacements - just ensure they're rated for 12V systems. LED conversions are plug-and-play for most models manufactured after 1995.