1 / 7Nilight TL-18 4-Inch Red LED Trailer Tail Lights, 2-Pack
Inch Pack: Nilight TL-18 trailer tail lights are a two-light set of round red LEDs intended for rear stop, brake, turn, and tail functions on 12V DC vehicles. The listing describes grommet mounting and an IP67 waterproof rating, with fit dependent on the opening dimensions.
At a glance
- Two round red LED tail lights for 12V DC systems, with stop, brake, turn, and tail-light functions listed.
- The listing specifies high brightness for stop, brake, and turn signals and lower brightness for tail-light operation.
- Grommet mounting is described. Compare the mounting opening and overall light dimensions with the vehicle before ordering.
- The manufacturer lists an IP67 waterproof rating.
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Pros and cons
Pros
- Two lights are listed, suitable for a paired rear-light replacement when the vehicle's openings and wiring match.
- Separate high and low brightness functions serve signal and tail-light roles.
- Customer feedback reports positive impressions of brightness and appearance.
Cons
- Customer feedback is mixed on durability and compatibility, including reports of connectors falling out after a few miles.
Technical specifications
15 specifications| Brand | Nilight |
|---|---|
| Model | TL-18 |
| Light source | LED |
|---|---|
| LED count | 12PCS 3030 SMD LED |
| Lens color | Red |
| Light functions | Double lighting brightness functions, high brightness for Stop/Brake/Turn signals light while low brightness for Tail light. |
| Mounting opening | 4.46” diameter, 1.87” depth |
| Light size with rubber grommet | 5.3” diameter, 1.87” depth |
| Lens material | Polycarbonate |
| Working voltage | 12V DC |
|---|---|
| Waterproof rating | IP67 |
| Vehicle types | RV, Trailer, Truck, UTV |
|---|---|
| Position | Rear |
| Fit type | Universal Fit |
| Warranty description | 2 Years Warranty |
|---|
What to know before buying
Listing details to confirm
The mounting instructions give a 4.3” diameter hole and 2” depth, while the product details specify a 4.46” diameter, 1.87” deep grommet opening. Confirm the required cutout and wiring before purchase. The listing also uses both 4-inch and 4.46-inch descriptions for the light, and its listed year of 1997 is not explained as an application fitment year. Waterproofing and compliance statements are manufacturer claims, not independently confirmed here.
What’s in the box
Included- 2 LED trailer tail lights
Who is it for?
A good fit for
- Trailer, RV, truck, or UTV owners seeking a two-light red rear set for a 12V DC system.
- Buyers replacing lights in an existing grommet opening who can verify the cutout dimensions and connector arrangement.
Less suited to
- Buyers who need a clearly confirmed fit for a particular vehicle without first checking opening dimensions and wiring.

Customer reviews on Amazon
- 5 stars
87% 87% - 4 stars
6% 6% - 3 stars
4% 4% - 2 stars
0% 0% - 1 star
3% 3%
Customer feedback highlights perceived brightness, appearance, and value, with some describing the lights as an upgrade. Reports about durability and compatibility are mixed, including concerns about connectors coming loose after a few miles. Buyers should weigh those experiences against the listed grommet dimensions and check connector fit for their installation.
Positive themes
- Customers report that the lights are bright and have a good appearance.
- Some customers describe them as a useful upgrade and appreciate their value.
Mixed feedback
- Durability feedback is mixed, including reports of connectors falling out after a few miles.
- Compatibility feedback is mixed.
Frequently asked questions
How many lights are included?
The manufacturer contents list specifies two 4-inch LED trailer tail lights.
What voltage and functions are listed?
The listing specifies a 12V DC system and stop, brake, turn, and tail-light functions, with brighter signaling and lower-brightness tail operation.
What opening size does it require?
The listing is inconsistent: one installation instruction says a 4.3-inch diameter hole and 2-inch depth, while product dimensions list a 4.46-inch diameter opening and 1.87-inch depth. Measure and verify before buying.
Is it suitable for outdoor use?
The manufacturer claims an IP67 waterproof rating and describes the lights for exterior rear use. This is a listing claim, not an independent verification.

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