Peterbilt 389 LED Headlights

Frequently Asked Questions About Peterbilt 389 LED Headlights

Will these LED headlights fit my Peterbilt 389 model year?

Our Peterbilt 389 LED headlights are designed to fit model years 2008 through current production. However, if your truck has aftermarket headlight buckets or custom modifications, we recommend measuring your current headlight diameter to ensure compatibility.

Do I need any special wiring or adapters to install LED headlights on my 389?

Most of our LED headlights feature standard H4 3-prong connectors that plug directly into your existing wiring harness. However, some older 389 models (2008-2010) may experience flickering or error codes due to the lower power draw of LEDs. In these cases, you may need to install load resistors or a relay harness, which we offer separately. Installation typically takes 30-45 minutes per side with basic hand tools.

What's the real difference in brightness and visibility compared to stock halogen lights?

Our LED headlights produce between 3,000-4,500 lumens per light compared to the 1,000-1,200 lumens of standard halogen bulbs. This translates to approximately 300% more light output with a cleaner, whiter light (typically 6,000K color temperature) that reduces eye strain during night driving. The beam pattern is DOT-approved and designed to prevent blinding oncoming traffic while significantly improving your forward and peripheral visibility.

How long do these LED headlights actually last, and what about warranty coverage?

Quality LED headlights typically last 30,000-50,000 hours of operation, compared to 500-1,000 hours for halogen bulbs. This means most drivers won't need to replace them for the life of their truck. Our LED headlights come with warranties ranging from 1 to 5 years depending on the manufacturer. The solid-state design means no filaments to break from vibration, and the aluminum housing provides excellent heat dissipation to prevent premature failure.

Are there different styles available, and will they match my chrome or blackout theme?

We offer LED headlights in multiple styles to match your 389's appearance. Options include classic chrome reflector housings, black housing with chrome bezels, full blackout versions, and models with LED position lights or halos. Some feature projector-style lenses while others use traditional reflector designs. All styles maintain the iconic round shape that complements the 389's classic styling while providing modern LED performance.