4 in Round LED Trailer Tail Lights 10-Pack - Bright Waterproof

In this review the 10Pcs 4 in Round LED Trailer Tail Lights are evaluated for trailer owners and fleet operators who need a reliable, plug-and-play replacement. The bottom line: this 10-pack delivers bright, low-current lighting and straightforward installation for most 12V trailers, with sealed grommets and 3-prong pigtails included so a single purchase can update an entire trailer wiring set. The review focuses on fit, brightness, durability, and ease of wiring to determine whether these lights are a practical value for regular towing use.

Key Features

• Complete installation kit: Each light ships with a round rubber grommet and a 3-prong wire pigtail so replacing fixtures is simple and requires no extra parts.
• Multi-function output: The 12 LED array performs stop, turn, brake and tail running light functions for consistent rear signaling on 12V vehicles.
• Measured fit: The visible housing uses a 5-1/8 in grommet ring with a 4 in inner diameter and about 1 3/16 in thickness, guiding the installer to drill roughly a 4-1/2 in hole for flush installation.
• Lower power draw: LED design draws less current than incandescent bulbs while offering brighter, more uniform illumination for improved visibility.
• Weather resistance: The lights are IP65 rated for splash and dust protection so they withstand road spray and grime in normal use.

Who It's For

These LED trailer tail lights are best for owners of semi trailers, utility trailers, enclosed trailers, horse trailers, pickup trucks, UTVs and similar 12V vehicles who want to replace multiple lights at once or update older incandescent fixtures to LEDs. The included grommets and 3-prong pigtails make them a solid choice for DIYers and fleet maintenance shops looking for consistent spare parts.

Those who need fully submersible lighting or a different mounting style should look elsewhere, since the IP65 rating protects against splashes but is not intended for continuous underwater use. Also check vehicle wiring and connector compatibility before buying if your trailer uses a nonstandard plug type.

Pros & Cons

Pros

• Bright 12 LED layout provides clear stop, turn and running light visibility while using less current than incandescent bulbs.
• Includes rubber grommets and 3-prong pigtails for a nearly complete swap without extra hardware.
• Flush mount design yields a clean, low-profile look when installed correctly in a 4-1/2 in hole.
• IP65 rating means good protection from dust and road spray in normal towing conditions.

Cons

• Not rated for continuous underwater use, so it is unsuitable for submersible applications.
• Installation requires drilling a roughly 4-1/2 in hole and confirming 3-prong connector compatibility.

Specifications

Quantity	10 pieces
Diameter	5-1/8 in grommet ring, 4 in inner diameter
LEDs per light	12 LEDs
Mount style	Flush mount with rubber grommet
Connector	Standard 3-prong wire pigtail included
Voltage	12V DC
Ingress protection	IP65 (not submersible)

Our Verdict

For trailer owners and small fleets who need to replace multiple rear lights quickly, this 10-pack offers strong value: bright, low-draw LEDs, included grommets and pigtails, and a straightforward flush-mount installation. It is not meant for underwater use, but for standard 12V trailers it balances brightness, durability and ease of fit at a cost-effective price.

Frequently Asked Questions

Are these lights fully waterproof?
They are IP65 rated for dust and splash resistance but are not designed for continuous underwater use.

What wires do the pigtails use?
White is ground, red is the high brightness feed and black is the low brightness feed per wiring tips included.

What size hole is required for installation?
The lights use a 5-1/8 in grommet ring with a 4 in inner diameter; plan to drill about a 4-1/2 in hole for proper flush mounting.