20 LED Truck Universal Tail Lights 12V 24V Trailer Rear Reverse Brake Lamp Side Turn Signal for Car

Universal 20‑LED tail light for 12V and 24V trucks, trailers, and commercial vehicles. Multi‑function design includes stop, tail, turn signal, reverse, and side marker in one housing. Surface mount with rear pigtail wires. No mounting hardware or wiring kit included. Verify dimensions and voltage range before installation.

This 20‑LED tail light is a universal fitment lamp suitable for trucks, trailers, agricultural equipment, and heavy‑duty vehicles. It operates on both 12V and 24V DC systems without any modification, making it ideal for mixed fleets or as an upgrade from incandescent lights.

The housing is molded from impact‑resistant ABS plastic with a fully sealed lens to resist moisture, dust, and road spray. Twenty high‑brightness LEDs are arranged in a optimized reflector tray. Red LEDs provide stop (bright) and tail (dim) functions. A dedicated amber or red LED array handles the rear turn signal. White LEDs serve the reverse light. Integrated side marker LEDs (amber) improve side visibility.

The lamp uses a simple 5‑wire or 6‑wire pigtail connection: ground, tail, stop, turn, reverse, and optional side marker. The low current draw of LEDs allows the use of thinner wiring and reduces battery drain. The universal surface‑mount design fits flat or slightly curved mounting surfaces with two screws (not included).

This tail light is a direct replacement for damaged or faded original lights. The all‑LED construction eliminates bulb replacement and provides instant illumination with faster response time compared to filament bulbs.

Installation tips: Before mounting, connect the wires to a 12V or 24V battery to verify each function. Mark wire colors as per your vehicle standard (common coding: black = ground, red = tail, white = stop, yellow = turn, green = reverse). Drill pilot holes smaller than screw diameter to avoid cracking the housing. Use stainless steel or coated screws for corrosion resistance. For trailer applications, seal the pigtail entry point with silicone if the lamp is exposed to high pressure washing.

Compatibility notes: This tail light works with most truck and trailer electrical systems. If your vehicle uses a combined stop+turn signal (common on some trailers), you will need a 3‑to‑2 wire converter. For 24V trucks, no additional regulator is required. For older vehicles with thermal flasher relays, LED operation may cause hyper‑flash. Replace the flasher relay with an LED‑compatible unit or install load resistors on each turn signal circuit.

Maintenance: Clean the lens with soapy water and a soft cloth. Do not use solvents or abrasive pads. Periodically check the housing seal for cracks after off‑road use.

Q1: Can I use this tail light on a 24V truck without any converter?
A1: Yes. The internal driver accepts both 12V and 24V DC input automatically. No converter needed.

Q2: Does this light include the turn signal function?
A2: Yes. The turn signal is integrated into the red LED array (or separate amber LEDs depending on version). Check the product photos for the exact flash color.

Q3: Why does my turn signal flash too fast after installation?
A3: The low current draw of LEDs is not detected by old thermal flasher relays. Install an LED‑compatible flasher relay or add load resistors (6 ohm, 50W) across each turn signal circuit.

Q4: Is this light suitable for use as a side marker only?
A4: Yes. Connect only the ground wire and the side marker lead (usually brown or orange) to use it as a side marker without stop/turn functions.

Q5: How do I mount this light on a curved trailer surface?
A5: Use a rubber mounting pad or foam gasket between the housing and the curved surface. Do not overtighten screws. For extreme curves, consider a surface mount bracket.

Q6: Can I submerge this tail light in water?
A6: The housing is sealed against rain, splashes, and pressure washing, but it is not designed for continuous submersion. Avoid deep water crossings.