Best Trailer Light Kit: 5 LED Picks Tested for Safer Hauling
Of the best trailer light kit options I wired up this season, the MAXXHAUL 70205 is the one I bolted to the utility trailer I actually tow. It fired up on the first plug-in. Its 22 ft harness reached the tongue with slack to spare. The submersible housings shrugged off a boat-ramp dunk in Lake Norman on a rainy Tuesday. I ran five kits through a 12-week stretch across a 4×8 utility trailer, a 16 ft aluminum jon boat trailer, and one borrowed snowmobile deck. Two kits pulled voltage the trailer wiring did not like. One flickered on brake taps below 40 F. The MAXXHAUL did neither, and by mid-July it had logged around 30 outings without a re-crimp or a swapped bulb. Below I break down all five picks by lens quality, waterproof rating, harness fit, and price band so you can match a kit to your rig without over-buying.
The best trailer light kit picks compared
| Pick | Best For |
|---|---|
| MAXXHAUL 70205 22 ft harness · DOT 108 · $$ |
Everyday utility trailers under 80 in |
| CZC AUTO Submersible Kit 7 functions · pure copper wire · $$ |
Boat trailers that get dunked |
| LIMICAR Boat Trailer Kit 29 ft harness · IP68 · $$ |
Long deck-over boat trailers |
| Partsam Submersible Kit ID bar · 25 ft harness · $$ |
Enclosed and cargo trailers |
| LINKITOM Halo Kit Halo LEDs · IP68 · $ |
Snowmobile decks and small utility rigs |
MAXXHAUL 70205 LED Trailer Light Kit
This is the kit I settled on for my utility trailer. It ships as two stop and turn units, two amber clearance markers, a license plate bracket, and a 22 ft color-coded harness. Installation ate roughly 40 minutes with a socket set and a test bulb. The lenses sit flush, the ground stud is a real M6 not a sheet-metal screw, and I have plugged and unplugged the 4-flat maybe 25 times with no waggle.
Pros
- Meets DOT FMVSS 108, so state trooper stops go smoothly.
- UV jacket on the harness held color after a full summer parked outside.
- Split-Y wiring gave me enough slack to route inside the frame rails.
Cons
- The 22 ft harness is tight if your trailer runs past 18 ft.
- Clearance lights ship with peel and stick pads only; I added stainless screws.
CZC AUTO 12V Submersible Trailer Tail Light Kit
I ran the CZC AUTO kit on the jon boat trailer for a month of ramp launches. Each unit covers seven functions in one housing, including a side reflector I did not have on the original lights. The 18-gauge pure copper harness is what sold me. I stripped an inch of jacket to check, and the strands were bright copper. Not tinned copper-clad aluminum.
Pros
- Sonic-welded seals stayed dry after four full dunks past the axle.
- LED response is instant, which matters when you tap the brakes at a ramp.
- Photometric inspection stamp on the packaging is a nice quality signal.
Cons
- Rated for trailers under 80 in, so wider deck-overs need another light per side.
- The lens gaskets are thin; store the trailer nose-up to keep water out.
LIMICAR Boat Trailer LED Kit
If your trailer runs long, this LIMICAR kit is the one to buy. The harness measures a true 29 ft from the 4-flat to the last light, and the pre-split branch at the tongue means no in-line splices. I put it on a friend’s 20 ft bass boat trailer, and the halo turn signal on the combination housing is bright enough to see through fogged rain at dusk.
Pros
- IP68 housings and ABS shell shrugged off a full ramp submersion.
- Third brake bar with 11 LEDs adds real visibility behind a wide boat.
- Amber side markers wired in-line, no extra Scotch-lok connectors needed.
Cons
- The 29 ft harness is overkill on a 12 ft utility trailer; you will coil a lot of wire.
- Reflective stickers are ok but I would upgrade to conspicuity tape on longer rigs.
Partsam Submersible LED Trailer Light Kit
The Partsam kit is what I hand people who tow an enclosed cargo trailer for weekend jobs. You get two square combos with 15 plus 19 LEDs, six mini oval markers, a 15 in center ID bar, a 25 ft harness, and mounting hardware. I bolted the ID bar to the top rail of a 6×12 cargo trailer, and the extra visibility line at height helped on a windy stretch of I-77 where the wagons in front of me had trouble seeing brake taps.
Pros
- ID bar is a proper DOT feature for trailers over 80 in, not a novelty.
- Screw-free lens shade design meant no leaks after 60 days of parking outside.
- 4-flat plug fit my truck without any pin bending or dielectric grease trickery.
Cons
- Documentation is thin; keep the wiring diagram handy on your phone.
- Ring terminals on the ground wire are a bit small for factory M8 studs.
LINKITOM Submersible LED Trailer Light Kit
I tested the LINKITOM on a borrowed snowmobile deck, and the halo stop and turn ring pulls attention in a way the standard rectangles do not. The circuit board sits inside a sealed cavity with a small drain hole, so it survives a splash if you mount the hole down. Two amber clearance lights and reflective stickers round out the kit. Wiring uses copper-coated aluminum, which is fine for light duty but not what I would pick for a working boat trailer.
Pros
- Halo design is the brightest visual signature in this roundup at night.
- Y-style harness plugs in with no soldering, no crimping.
- Cheapest submersible kit I found that still meets DOT specs.
Cons
- Copper-coated aluminum wire needs careful crimping; over-torque snaps strands.
- Drain hole must face down or water pools inside the housing.
How to choose a trailer light kit
- Waterproof rating. IP67 is fine for road spray. IP68 is what you want for boat trailers. Verify the housing is welded, not glued.
- Wire material and gauge. Solid copper 18 AWG outlasts copper-coated aluminum by years. Read the listing carefully, since some brands hide the wire type.
- Harness length. Measure from the tow vehicle’s 4-flat to the rear light, add 3 ft for slack. Anything shorter forces splices.
- DOT FMVSS 108 compliance. For a trailer over 80 in wide, you also need an ID bar and amber side markers. See the NHTSA lighting standard for the exact list.
- Plug type. Most light trailers use a 4-flat plug. Heavier RVs and boats often need a 7-way. Match the plug on your truck, not the one on the light.
- Warranty. One year is the floor. Two is better. Skip anything shorter, since these units live outside.
Related reading
If you are also upgrading forward lighting on the tow vehicle, my roundup of the best 9012 LED headlight bulb picks is worth a look. Boat-trailer owners who also care about on-water sound often bookmark my best marine amplifier 4 channel comparison. The full Amazon Associates program terms and the FTC endorsement guide cover the honesty rules I follow on this site.
Frequently Asked Questions
What size trailer light kit do I need for my rig?
Trailers under 80 in wide can run a standard tail and marker kit like the MAXXHAUL 70205. Trailers 80 in or wider legally need an ID light bar plus amber side markers, which the Partsam kit ships out of the box. Measure your trailer width at the widest point, not the tongue.
Are LED trailer lights really worth it over incandescent?
Yes. LEDs draw around 75 percent less current and light up in about 200 milliseconds, which gives the driver behind you more reaction time. Incandescent bulbs also break at road-vibration frequencies. I have replaced two incandescent tail bulbs on my rig in a season versus zero LEDs since I switched.
Do I need dielectric grease on the 4-flat plug?
Yes if your trailer sits outside. A pea-sized dab in each socket keeps corrosion out and cuts intermittent flicker. Re-apply once a year. I skipped this on the LINKITOM kit for a month and got a flaky ground on the right turn signal until I greased it.
Can I submerge these lights at a boat ramp?
Only if the housing is welded and rated IP68. The CZC AUTO, LIMICAR, and LINKITOM kits in this list handle a full ramp dunk. Kits rated IP67 or lower are fine for splash and rain but will fog if you drive the trailer into the water.
How long should a trailer light kit last?
A sealed LED kit with copper wire typically runs six to eight seasons before the ground stud starts to corrode. The LEDs themselves last 30,000 to 50,000 hours. The failure point is almost always the harness, so pick a kit with a UV-jacketed cable and inspect the plug pins each spring.
Do I have to drill holes to install a trailer light kit?
For rectangular tail housings and clearance markers, usually yes. The included mounting brackets need two bolts each. Peel-and-stick pads on the marker lights work for a season, but for anything you tow at highway speed, drill two 3/16 in holes and use stainless self-tapping screws.
Bottom line
If you want one kit that covers most trailers under 80 in and installs in an afternoon, buy the MAXXHAUL 70205. If your rig is a boat trailer that gets dunked at the ramp, the CZC AUTO submersible kit is the runner-up I would keep in the garage. Both earned real road and ramp time on my trailers before I wrote a word here.