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Truck & Trailer Lights
Find LED and incandescent lights for semi-trucks and trailers — including stop/tail/turn lights, clearance and marker lights, backup lights, license plate lights, work lights, and amber warning strobes. Whether you're replacing a single burned-out marker or re-lighting an entire trailer fleet, this category carries the parts to get the job done right.
LED options make up the majority of the selection, offering long service life, low current draw, and resistance to road vibration — a practical fit for Class 6–8 trucks, trailers, and vocational equipment. Incandescent replacements remain in stock for older equipment and budget repairs. Housings come in round, oval, rectangular, and low-profile styles with grommet-mount and flange-mount options in both sealed and serviceable configurations.
All major compliance standards are represented, including DOT, FMVSS 108, SAE, and IP67–IP69K environmental ratings. Brands include Grote, Truck-Lite, Peterson, Pro LED, Automann, and Betts. Wiring pigtails, mounting brackets, and hardware are stocked alongside the lights to support complete, road-ready installations.
What lights are required on a semi-trailer?
Federal regulations under FMVSS 108 and 49 CFR 393 require semi-trailers to be equipped with stop lamps, tail lamps, turn signals, clearance lamps, side marker lamps, a license plate lamp, and reflectors. Trailers 80 inches or wider require amber side marker lamps at the front and rear corners, red clearance lamps at the widest points, and three red identification lamps centered at the top rear. Trailers over 30 feet long also require intermediate amber side markers at the midpoint of each side. All required lamps must be visible from at least 500 feet.
What's the difference between clearance lights and marker lights?
Clearance lights indicate the outer width and height of the vehicle — they mark the edges. Marker lights indicate the presence and length of the vehicle from the side. Both are required on trailers 80 inches or wider, and both must be amber on the front and sides, red at the rear.
Are LED marker and clearance lights DOT compliant?
Yes. LED lights that carry the DOT certification marking meet FMVSS 108 requirements and are legal replacements for incandescent lamps in the same application. Look for the "DOT" marking on the lens. LED options are now the dominant choice for commercial trucks and trailers due to longer service life, lower current draw, and better resistance to vibration and moisture.
Will LED lights cause my turn signals to hyperflash?
They can, if the flasher unit isn't rated for LED loads. LED turn signal lamps draw significantly less current than incandescent bulbs, which can cause a standard thermal flasher to cycle too fast. The fix is an LED-compatible electronic flasher — that's what our Flashers subcategory carries.
Can I replace incandescent marker lights with LED on an older trailer?
In most cases, yes — as long as the replacement LED lamp is DOT-certified for the same function (marker, clearance, stop/tail/turn) and fits the existing mounting hole. Grommet-mount round and oval LED lamps are widely available as direct replacements for incandescent units. Check the wiring connector type (most common is the 3-prong or 2-prong molded pigtail) before ordering to confirm compatibility.
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