Frequently Asked Questions About Peterbilt 330, 335, and 337 Driving Lights
Will these driving lights fit my Peterbilt 330, 335, or 337?
Peterbilt 330, 335, and 337 driving lights are designed to fit select Peterbilt medium-duty truck models, with many aftermarket driving lights fitting trucks manufactured from 2008 through 2015. Exact driving light fitment depends on your truck?s model year, bumper style, mounting bracket setup, grille guard configuration, wiring layout, and available auxiliary light mounting points.
Before ordering Peterbilt 330/335/337 driving lights, verify your truck?s model year, VIN, OEM part number, bumper configuration, and whether the truck has a standard bumper, aero bumper, grille guard, or pre-drilled auxiliary light mounting locations. If fitment is unclear, compare the product specifications with your existing bumper and mounting points before purchase.
Can I install Peterbilt 330/335/337 driving lights myself?
Many Peterbilt 330, 335, and 337 driving light kits can be installed with standard hand tools, moderate mechanical skill, and basic electrical knowledge. Typical driving light installation may take 2 to 3 hours, depending on the light style, mounting brackets, wiring harness, switch location, and bumper access.
Installation usually involves mounting the driving light brackets, routing the wiring harness, passing wiring through the firewall, connecting to a switched power source, and installing a dash switch. The most challenging part is often routing the wiring harness cleanly and safely away from heat, sharp edges, and moving components. Plug-and-play driving light harnesses can simplify the electrical connections when included with the kit.
What is the difference between LED and halogen Peterbilt 330/335/337 driving lights?
Peterbilt 330/335/337 driving lights are commonly available in LED and halogen styles. LED driving lights provide longer service life, lower power draw, instant full brightness, cooler operation, and better vibration resistance compared with traditional halogen driving lights.
LED driving lights may last 50,000 or more hours and typically draw about 4 to 8 watts per light. Halogen driving lights usually cost less upfront but may only last around 500 to 1,000 hours and commonly draw 55 to 100 watts per light. For commercial trucks, many drivers prefer LED driving lights because they offer stronger long-term reliability, reduced maintenance, and better light output per watt.
Are Peterbilt 330/335/337 driving lights DOT approved?
Peterbilt 330/335/337 driving lights may be DOT-approved or SAE-approved for on-road use when the specific light carries the proper compliance markings and is installed correctly. Always check the product listing, lens markings, and manufacturer specifications to confirm whether the driving lights are approved for highway use.
DOT-approved driving lights must be mounted, aimed, wired, and used according to applicable federal, state, and local regulations. Improperly aimed or incorrectly wired auxiliary driving lights can create glare for other drivers and may not be legal for on-road use.
Are auxiliary driving lights street legal on a Peterbilt 330, 335, or 337?
Auxiliary driving lights can be street legal on a Peterbilt 330, 335, or 337 when they are DOT/SAE-approved, properly installed, correctly aimed, and used according to local lighting laws. Regulations can vary by state, especially for the number of auxiliary lights allowed, when they may be used, and whether covers are required when the lights are not in use.
In many applications, driving lights must be wired so they do not create excessive glare or operate in a way that conflicts with headlight and high-beam requirements. Check your state regulations and fleet requirements before using aftermarket Peterbilt driving lights on public roads, especially in fog, rain, snow, or nighttime highway conditions.
What mounting options are available for Peterbilt 330/335/337 driving lights?
Peterbilt 330/335/337 driving lights may use several mounting options, including bumper-mounted brackets, grille guard mounts, below-bumper mounting tabs, and universal auxiliary light brackets. The correct mounting option depends on your bumper style, grille guard setup, light size, and available mounting locations.
Some Peterbilt 330/335/337 bumpers may already have pre-drilled mounting points for auxiliary driving lights, which can reduce or eliminate the need for drilling. Universal driving light brackets may require drilling 2 to 4 holes per light, depending on the bracket design and mounting surface. Stainless steel mounting brackets generally provide better corrosion resistance than painted steel brackets.
Will I need to drill into my bumper to install Peterbilt driving lights?
You may not need to drill into your Peterbilt 330/335/337 bumper if the truck already has factory-style auxiliary light mounting points, pre-drilled bumper holes, grille guard light tabs, or compatible mounting brackets. Many light kits are designed to use existing mounting locations when available.
Drilling may be required if your bumper does not have existing auxiliary light provisions or if you are using universal mounting brackets. Before drilling, confirm light placement, bracket alignment, wiring clearance, and bumper material. Permanent highway-use driving lights should be mounted securely; magnetic mounting bases may work for temporary use but are not recommended for permanent commercial highway applications.
