The best trailer tail light assembly depends on your trailer’s width, mounting style, and need for water exposure protection. The Partsam and CZC AUTO options are submersible LED choices for trailers under 80 inches wide. Peterson is a right-side combination light, Nilight is a two-pack of oval grommet-mount lights, and Lumitronics is a surface-mount incandescent option for RVs and utility trailers.
| Product | Best For | Key Detail |
|---|---|---|
| Partsam 12V Submersible Square LED | Under-80-inch trailers | Multiple signaling and reflector functions |
| CZC AUTO Submersible LED Pair | Boat and other trailers needing submersible lights | Left and right lights with license illumination on the left |
| Peterson 440 Combination Tail Light | Right-side replacement | Mounts on 2-inch centers |
| Nilight 6-Inch Oval LED Pair | Grommet-mount installations | Two red lights; IP65 rating |
| Lumitronics RV Surface-Mount Light | RV or camper surface mounting | Incandescent, replaceable bulb and lens |
Partsam 12V Submersible Square LED Light
This Partsam assembly is best for owners of trailers under 80 inches wide who want several signaling and reflector functions in a square LED light. The listed applications include trailers, boats, trucks, tractors, buses, and other vehicles.
The curb-side light has stop, turn, tail, rear-reflector, side-marker, and side-reflector functions. The street-side light adds a license plate illuminator, for seven listed functions. The product is described as 12V, submersible, IP68, and DOT compliant.
Choose this if you need a multi-function pair for a narrow trailer, including a license plate light on the driver side. Limitation: the stated fit is for vehicles under 80 inches wide, so confirm your trailer’s width and mounting layout before choosing it.
CZC AUTO Submersible LED Tail Lights
This left-and-right LED set is best for boat trailers and other towing vehicles under 80 inches wide. Both lights provide stop, turn, tail, rear-reflector, side-reflector, and side-marker functions. The left light also has a license plate light.
The manufacturer describes the lights as waterproof and submersible, with sonic-welded sealing and glue-sealed gaps. The listing also specifies 18-gauge pure copper wires and says the lights comply with DOT standards.
Choose this if you want a matched pair with submersion-focused construction and a dedicated license illumination function. Limitation: this is a left-and-right set for trailers under 80 inches wide; check that its configuration suits your existing mounting and wiring arrangement.
Peterson 440 Right-Side Combination Light
The Peterson 440 is best for replacing a right-side light on a trailer under 80 inches wide. Its listed functions are stop, turn, tail, rear reflex, side marker, and side reflex. The assembly mounts on 2-inch centers and includes mounting hardware.
This is a practical option when the mounting-stud spacing matches the trailer’s existing holes. The light grounds through its 1/4-inch mounting studs, so the mounting arrangement is part of the electrical connection.
Choose this if you need a passenger-side combination light and can use the specified mounting centers and stud grounding. Limitation: the listed product is the right-side light, not a left-and-right pair.
Nilight 6-Inch Oval LED Lights, Two-Pack
This Nilight two-pack is best for trailer owners who need red oval lights designed for grommet mounting. Each light uses 10 SMD LEDs. The listed output is brighter for turn and brake functions and lower for tail-light operation.
The product features a three-prong plug connection, a design intended to hold the light firmly in its grommet, and a highly silicon-sealed housing rated IP65 for water resistance.
Choose this if your trailer uses 6-inch oval grommet-mounted lights and you want a two-light LED set. Limitation: the listing specifies IP65, not submersible construction, so it is not the choice to prioritize for routine underwater exposure.
Lumitronics RV Surface-Mount Light
This Lumitronics assembly is best for RVs, campers, travel trailers, fifth wheels, motorhomes, and utility trailers that use a surface-mounted light. It provides incandescent stop, turn, and tail functions and is listed at 4.3 lumens.
The sealed housing is described as weatherproof and includes a snap-on replaceable lens and bulbs that can be changed. Those serviceable parts may suit buyers replacing an existing incandescent surface-mount assembly.
Choose this if you need a surface-mount incandescent replacement with a replaceable lens and bulbs. Limitation: it is incandescent rather than LED, which matters if you specifically want an LED assembly.
Buying Guide: How To Choose A Trailer Tail Light Assembly
Does the light match your trailer’s width and side?
Check the product’s stated trailer-width range and whether it is for the left, right, or both sides. The Partsam and CZC AUTO sets are listed for trailers under 80 inches wide. Peterson’s product is specifically a right-side light. A pair is convenient for replacing both sides, while a single-side unit may be appropriate for a targeted repair.
Do you need a submersible light?
Boat-trailer owners should distinguish between a product described as submersible and one described as water-resistant. Partsam and CZC AUTO are listed as submersible. Nilight specifies IP65 sealing, while Lumitronics describes a sealed, weatherproof housing. Do not treat those descriptions as interchangeable.
Will the mounting style fit?
Compare the existing light’s shape, mounting points, and connection type before ordering. Peterson lists 2-inch mounting centers and grounding through its 1/4-inch studs. Nilight is designed for oval grommet mounting. Lumitronics is a surface-mount light. Confirm the trailer’s available space and wiring arrangement.
Which lighting technology and functions do you need?
LED options include the Partsam, CZC AUTO, and Nilight products. Lumitronics uses incandescent bulbs. Also verify the functions needed: stop, turn, and tail are common, while reflector, side-marker, and license-plate illumination vary by assembly. The CZC AUTO and Partsam listings specify license illumination on the left or street-side light.
Frequently Asked Questions
Are trailer tail lights interchangeable between left and right sides?
Not always. Some products are sold as a left-and-right set, while others are side-specific. Check the listing and the location of any license plate light before replacing a single assembly.
What is the difference between a submersible and weatherproof trailer light?
A submersible light is specifically described for exposure underwater. Weatherproof or IP-rated wording does not automatically establish that a light is suitable for submersion.
Can I replace an incandescent trailer light with an LED assembly?
LED and incandescent products use different light technologies. Before switching, compare the assembly’s mounting, wiring, and listed functions with the trailer’s existing setup.
What should I check before ordering a replacement?
Confirm the trailer’s width, the required side, mounting style and spacing, wiring connection, lighting functions, and whether the light must withstand submersion.