Frequently Asked Questions About International S1700-S1900 LED Headlights

Will these LED headlights fit my specific International S-Series truck model and year?

Our International S1700-S1900 LED headlights are designed to fit most S-Series trucks manufactured between 1989 and 2004. However, fitment can vary based on your specific model configuration. The S1700, S1800, and S1900 models typically use 7-inch round or 4x6-inch rectangular sealed beam patterns. Before ordering, check your existing headlight size and mounting style, or contact our support team with your VIN for exact fitment verification.

Do I need any special wiring harnesses or adapters to install LED headlights in my International truck?

Most of our LED headlight conversions are plug-and-play replacements that work with your truck's existing wiring. However, some older S-Series models may require an anti-flicker harness or load resistor to prevent hyperflashing or dashboard warning lights. If your truck has daytime running lights (DRL), you may need a DRL decoder. We recommend having a multimeter handy during installation to verify proper voltage and ground connections.

How much brighter are LED headlights compared to my stock halogen bulbs, and are they DOT legal?

Our LED headlights typically produce 3-4 times more lumens than standard halogen bulbs, significantly improving nighttime visibility. All our LED headlights are DOT approved and street legal when properly aimed. The crisp white light (usually 6000K-6500K color temperature) provides better contrast and reduced eye strain compared to yellowish halogen bulbs. Remember to re-aim your headlights after installation to avoid blinding other drivers.

What's the typical installation time, and do I need special tools or professional help?

Installation usually takes 30-60 minutes for both headlights. Basic hand tools like screwdrivers and socket wrenches are typically all you need. The process involves removing the headlight bezels, unplugging the old sealed beams, plugging in the new LED units, and reassembling. Some S-Series models have tight engine compartments that may require removing the grille or air intake components for easier access. While most drivers can handle this DIY project, professional installation is recommended if you're uncomfortable with electrical work.

How long do these LED headlights last, and what warranty coverage is available?

Quality LED headlights typically last 30,000-50,000 hours of operation, which translates to 15-20 years of normal truck use. This is significantly longer than halogen bulbs that need replacement every 1-2 years. Most of our LED headlights come with warranties ranging from 1-3 years, covering manufacturing defects and premature failure. The aluminum housing and polycarbonate lenses are designed to withstand harsh trucking conditions, including vibration, moisture, and temperature extremes.