The best horse trailer light kit depends on the functions and wiring your trailer needs. For a basic replacement setup, choose a kit with stop, tail, and turn lights plus a harness; for reverse lighting, select a kit with a five-pin connector and backup lights. The first kit is best for a straightforward four-pin installation, while the second adds reverse lights. The LIGBT kit includes more marker lights, and the two RONSTA kits offer bundled lights and reflective stickers for general trailer use.
| Kit | Best For | Key Difference |
|---|---|---|
| 4-Inch Round Kit With 25-Foot Harness | Four-pin lighting replacement | IP67 lights and included wiring |
| Round Kit With Backup Lights | Trailers needing reverse lights | Five-pin harness and backup function |
| LIGBT 4-Inch Kit | More side marker coverage | Ten marker lights and 16-inch bar |
| RONSTA Kit With Wiring | Buyers wanting a bundled harness | 25-foot harness included |
| RONSTA Kit With Light Bar | Basic light-and-marker replacement | Harness not listed |
4-Inch Round Kit With 25-Foot Harness
This kit includes two 4-inch round LED stop, tail, and turn lights, six mini side marker lights, a 13.8-inch third brake light bar, a 25-foot wiring harness with a four-pin flat plug, and reflective stickers. The main lights are listed as IP67 waterproof and use rubber-grommet mounting.
Best for: Horse trailer owners replacing a basic light system who need a four-pin harness and several lighting components in one package. The listing says a roughly 4.5-inch hole may be needed for flush installation, so check the trailer openings before ordering. Confirm the included plug matches the trailer and tow vehicle wiring.
Round Kit With Built-In Backup Lights
This package has two round lights with stop, tail, turn, and backup functions, six side marker lights, a 13.8-inch brake light bar, reflective stickers, and a 25-foot five-pin flat harness. Each main light has 16 LED diodes, and the backup function uses an additional blue wire and bullet-style connector.
Best for: Buyers who want reverse lights integrated into the round tail-light assemblies. Choose this kit when the trailer wiring can use its five-pin setup. Its connector differs from four-pin kits, and installation may require a roughly 4.5-inch opening; verify both details before purchase.
LIGBT Kit With Ten Marker Lights
The LIGBT package includes two 4-inch round stop, turn, and tail lights, a 16-inch high-mount brake light bar, ten mini fender marker lights—six amber and four red—and four reflective stickers. The listing gives dimensions for the lights and says installation involves connecting the wires to corresponding terminals and securing the lights at pre-drilled mounting holes.
Best for: Owners who need more side marker lights than the six-light packages provide. The larger marker-light count is the main distinction. A wiring harness is not listed among the included components, so check whether the trailer’s existing wiring is usable or whether additional wiring is needed.
RONSTA Kit With 25-Foot Wiring
This RONSTA kit includes two 4-inch round trailer lights, six mini side marker lights, a 13.8-inch third brake identification light bar, a 25-foot wiring harness, and four reflective stickers. The listing describes the lights as IP67-rated and submersible, and notes protection against conditions such as rain, snow, dust, and dirt.
Best for: Buyers seeking a bundled kit with a long harness and water-resistant lights. The harness connector type is not specified in the provided product details, so confirm the plug configuration before choosing it for a horse trailer. The listing does not specify the number of LEDs in the main lights.
RONSTA Light Kit With Reflective Stickers
This package contains two 4-inch round trailer lights, six mini side marker lights, a 13.8-inch third brake identification light bar, and four reflective stickers. The listing describes the lights as IP67-rated and submersible, with protection from water, dust, dirt, and other listed environmental exposure.
Best for: Trailer owners replacing several lighting components who already have suitable wiring or plan to source it separately. Unlike the other RONSTA kit above, a wiring harness is not listed as included. Check the existing wiring and required connector before installation.
Buying Guide: How To Choose A Horse Trailer Light Kit
Does the kit match your trailer plug?
Check the connector type before comparing other features. The first kit has a four-pin flat plug, while the backup-light kit specifies a five-pin flat plug. The two RONSTA listings do not identify the harness connector, and one does not list a harness at all. Match the kit to the trailer’s wiring or plan for appropriate wiring work.
Do you need reverse lights?
Choose a kit with backup lights if reverse illumination is a priority and the trailer wiring supports the additional circuit. The five-pin kit includes white backup lights and identifies a separate blue wire for that function. Standard stop, tail, and turn lights may be the simpler choice if reverse lighting is not needed.
Will the lights fit the existing openings?
Compare the light and grommet dimensions with the trailer before ordering. The first two product listings say a hole of about 4.5 inches may be needed for flush mounting. Measure existing openings and mounting space, including room for the light bar and side markers.
What comes in the package?
Count the components you need: round combination lights, side markers, a high-mounted brake bar, harness, and reflectors. The LIGBT kit stands out for its ten marker lights. The first and fourth kits list 25-foot harnesses. Do not assume an unlisted component is included.
Frequently Asked Questions
What lights should a horse trailer have?
A typical replacement kit should provide the trailer’s required stop, tail, and turn functions, along with any marker lights needed for its layout. Check applicable regulations and the trailer’s existing wiring before buying.
Can I use a four-pin kit if my trailer has five-pin wiring?
Do not assume the connectors are interchangeable. Compare the plug and required functions, especially if the trailer uses a separate reverse-light circuit.
Are these kits waterproof?
Some listings identify their lights as IP67-rated or submersible, but not every product description provides that specification. Check the individual kit details and installation requirements.
Do these kits include a wiring harness?
Harness inclusion varies. The first and fourth kits list 25-foot harnesses, and the second lists a 25-foot five-pin harness. The LIGBT kit and final RONSTA kit do not list a harness in the supplied details.