The best carry-on trailer lights depend on your trailer width, wiring needs, and exposure to water. The CZC AUTO 12V LED Kit is a strong fit for boat trailers needing submersible lights, while the MAXXHAUL 70205 is better for buyers who want a broader kit with clearance lights and a long harness. The five options below cover compact combination lights and more complete replacement kits.
| Product | Best For | Standout Feature |
|---|---|---|
| CZC AUTO 12V Submersible LED Kit | Boat trailers | Sealed lights and copper wiring |
| MAXXHAUL 70205 | Full-kit replacement | Clearance lights and 22-foot harness |
| Partsam 12V Square LED Lights | Trailers under 80 inches wide | Different functions for left and right lights |
| CZC AUTO Rectangular Light Kit | Buyers needing a wiring harness | 25-foot, four-pin harness |
| fouwick LED Tail Trailer Light | Buyers seeking multi-function lights | Side markers and license illumination |
CZC AUTO 12V Submersible LED Kit
This kit is best for owners of boat or utility trailers under 80 inches wide who need combination tail lights with multiple functions. The listed functions include stop, turn, tail, rear reflector, side reflector, side marker, and license plate illumination.
The manufacturer describes the lights as submersible and says the housings use sonic-welded seals and marine-grade glue. The kit also includes 18-gauge pure copper wiring. These features make it a relevant choice for boat-trailer use, where lights and wiring may encounter water.
- Best for: A multi-function light kit for a narrower trailer.
- Why it stands out: It combines sealing details with a seven-function design.
- Limitation: Confirm the trailer’s width and wiring connections before installation.
MAXXHAUL 70205 Complete LED Kit
The MAXXHAUL 70205 is best for buyers replacing more than the two rear lights. The kit includes two 12-volt LED stop, tail, and turn lights, two amber clearance lights, a license plate bracket, and a wiring harness.
Its 22-foot split Y-style harness is color-coded, which can help organize installation. The product is described as waterproof and submersible, and its listed uses include trailers, boat trailers, trucks, campers, and RVs. Choose this kit when the included clearance lights and harness match the project; it offers more components than a tail-light-only option.
- Best for: A broader lighting refresh using one kit.
- Why it stands out: Includes clearance lights and a license plate bracket.
- Limitation: Check whether the harness length and included components suit your trailer.
Partsam 12V Square LED Lights
These Partsam lights are best for buyers replacing left and right combination lights on a trailer under 80 inches wide. The curb-side light has 15 diodes and six listed functions: stop, turn, tail, rear reflector, side marker, and side reflector. The street-side light has 19 diodes and adds a license plate illuminator.
The product listing describes the lights as submersible and identifies them as DOT compliant. Their separate left- and right-side designs matter when choosing replacements: the license plate light is on the street-side unit, so check which side each light belongs on before mounting.
- Best for: A left-and-right replacement set with distinct light functions.
- Why it stands out: The driver-side light includes license plate illumination.
- Limitation: The listing does not identify a wiring harness among the stated features.
CZC AUTO Rectangular LED Light Kit
This rectangular CZC AUTO kit is best for buyers who want rear lights and wiring in the same package. It includes two combination running, stop, tail, and turn lights, a license plate bracket, mounting hardware, and a 25-foot four-pin wire harness. The listing specifies 18-gauge copper wire.
The lights are described as waterproof and submersible, with the left light providing license plate illumination. The listing also says the lights comply with DOT standards. Choose this option if the included harness length and four-pin setup fit your trailer’s existing wiring plan.
- Best for: Buyers needing a rear-light kit with a long harness.
- Why it stands out: Includes mounting hardware and a plate bracket.
- Limitation: Verify the wiring connections and harness routing before purchase.
fouwick Multi-Function LED Tail Light
The fouwick light is best for buyers seeking bright, multi-function rear lighting for a towing vehicle under 80 inches wide. Listed functions include stop, turn, tail, rear reflector, side reflector, and side marker; the left light also has a bottom LED license plate light. The product description specifies 15 SMD LEDs per light and dual brightness for stop and tail functions.
The housing is described as sonic-welded and sealed with waterproof glue, including around wire entry points and lens edges. Heavy-duty 18-gauge copper wiring is also listed. Note that the product name says “Light Only,” so check the package contents carefully if you need both sides or a complete kit.
- Best for: Buyers prioritizing multi-function lights and side visibility.
- Why it stands out: The left light adds license plate illumination.
- Limitation: Confirm how many lights are included before ordering.
Buying Guide: How to Choose Trailer Lights
Do you need individual lights or a complete kit?
A light-only purchase may suit a single replacement, but it may not include both sides, a harness, or mounting hardware. A complete kit such as the MAXXHAUL or CZC AUTO rectangular option includes additional components. Compare the package contents with the parts you actually need to replace.
Will the lights fit your trailer?
Check the trailer’s width, mounting space, and the left-versus-right placement before choosing. Several listed products specify use on trailers under 80 inches wide. Also check whether the light’s shape and mounting arrangement match your existing setup.
Will the trailer be exposed to water?
For boat-trailer use, prioritize products explicitly described as submersible or waterproof. Sealed housings and copper wiring are listed features on several options, but installation still matters. Follow the product instructions and make secure wiring connections.
What functions and wiring are important?
Confirm that the lights cover the required stop, turn, and tail functions. Side markers, reflectors, and license plate illumination may also be important for your setup. If buying a kit, compare the harness length, connector type, and included brackets with the trailer’s wiring needs.
Frequently Asked Questions
Are these trailer lights designed for boat trailers?
Several products are described as waterproof or submersible and list boat-trailer use. Check the specific product details and installation instructions before using lights in water.
Do all five options include a wiring harness?
No. The MAXXHAUL and rectangular CZC AUTO listings specify a harness. Check the package details for the other products, especially the fouwick light labeled “Light Only.”
What does a left-side license plate light do?
It illuminates the trailer’s license plate from a light built into the left-side unit on products that list that function. Confirm the orientation when installing the lights.
Can I use these lights on any trailer?
Not necessarily. Verify trailer width, mounting fit, voltage, wiring, and the light functions required for your application before buying.
What should I check before ordering replacement lights?
Compare the existing light’s dimensions and mounting points, determine whether you need one side or a pair, and confirm whether a harness or license plate bracket is included.