The Kicker 46KMWRGB150 is a combined marine cable that runs 16 AWG speaker wire and 18 AWG RGB LED wire through a single jacket, and it's built to comply with U.S. Coast Guard federal regulations for marine wiring — not just ABYC and NMMA standards, which is a step beyond what most speaker wire on the market claims. It's sold by the foot in lengths from 25 to 150 feet, starting at $64.95 for a 25-foot cut.
Most of the wiring questions we get at Ocean Rock Audio are about gauge and copper type. This product answers a different question: what do you actually run if you're wiring both a speaker and its LED lighting at the same time, and you want the cable itself to meet the standards a boat surveyor would actually check?
Key Takeaways
- It's one cable with two conductors: 16 AWG for speaker signal, 18 AWG for RGB LED power/data, so you run one wire instead of two separate ones.
- It's rated to meet ABYC, NMMA, and NMEA standards, and specifically called out as compliant with U.S. Coast Guard federal regulations — relevant for new-boat construction, not just casual upgrades.
- Conductors are tinned, tightly twisted oxygen-free copper (OFC) — the same standard our own wiring guide recommends, not a lesser grade because it's a combo cable.
- Sold by the foot in 25, 50, 75, 100, or 150-foot lengths; cut wire is final sale, no returns.
- The 16 AWG speaker conductor matches our wiring guide's baseline recommendation, but it's not the right gauge for a full-power run to something like the 45KM84L at 150W RMS — more on that below.
Two Wires, One Jacket: What's Actually Inside
The construction is straightforward once you know what to look for: a 16 AWG pair for speaker signal, and an 18 AWG pair for RGB LED power and data, both tinned, tightly twisted OFC copper, wrapped in a single flexible PVC jacket rated to marine-grade durability standards.
The practical benefit is fewer cable runs. If you're installing a Kicker LED speaker like the 45KM84L or KM654L and also wiring in a 41KMLC controller, you'd otherwise be fishing two separate cables through the same bulkhead penetrations, grommets, and conduit. This collapses that into one run.
Why the Coast Guard Cares About Your Speaker Wire
Most marine speaker wire on the market claims to be “marine-grade” without pointing to a specific standard. The 46KMWRGB150 does the opposite: it names ABYC, NMMA, and NMEA compliance directly, and states compliance with U.S. Coast Guard federal regulations for marine wiring.
That distinction matters most if you're wiring a new-boat build or a full refit that needs to pass survey — Kicker specifically frames it as carrying marine safety certification for new-boat construction, which is a different bar than “good enough for a weekend upgrade.” If you're a boat builder, a marine electrician, or doing a full rewire that needs to meet code, this is the kind of certification you'd actually be asked to document. If you're just swapping a pair of speakers on your own boat, it's a nice-to-have rather than a requirement, but it's not a lesser cable for casual use, either.
How Much Do You Actually Need
The 46KMWRGB150 is sold by the foot, with cut lengths available at 25, 50, 75, and 100 feet, plus a full 150-foot spool for larger jobs. Pricing starts at $64.95 for the 25-foot length; confirm current pricing for the other lengths at checkout, since per-foot cable pricing shifts more often than fixed-price hardware.
For reference, our marine speaker wiring guide covers routing practices — grommets at hull penetrations, UV-resistant conduit, avoiding chafe points — that apply directly to running this cable, combined LED wire or not. Measure your actual run length before ordering: because cut wire is final sale, buying short and needing a second cut costs more than slightly overestimating upfront.
Pairing It With Your LED Speakers and Controller
This cable is the connective piece for a specific kind of build: LED speakers, plus a controller, wired as one system rather than two separate projects.
Picture a pontoon build with a pair of KM654L speakers at the bow and a 41KMLC controller mounted at the helm. Rather than running standard 16 AWG speaker wire for audio and a separate 3-conductor LED data cable alongside it, the 46KMWRGB150 carries both from a single spool, cut to the exact run length needed for each speaker.
One caveat worth being direct about: the 16 AWG speaker conductor in this cable matches our wiring guide's baseline recommendation for standard marine installs, but the guide also calls for 14 AWG on longer amplified runs and 12 AWG for anything over 75W RMS — which the 45KM84L's 150W RMS rating exceeds. If you're running a high-power amplified pair of 45KM84L speakers over any real distance, this combined cable's speaker gauge is undersized for that specific job. It's the right cable for the LED speakers at moderate power, or shorter runs; for a full-power 45KM84L build, run heavier-gauge speaker wire separately and use this (or a comparable dedicated LED cable) just for the lighting conductor.
Where It Comes Up Short
Cut wire is final sale. Order the wrong length and there's no returning it — measure your run first.
1-year warranty, consistent with Kicker's electronics and cable accessories generally, shorter than the 3-year warranty on the KM speaker lineup itself.
Not the right gauge for high-power runs. As covered above, the 16 AWG speaker conductor is sized for standard use, not a fully amplified 150W RMS run to an 8-inch speaker over real distance.
It doesn't replace your amp or power wiring. This is speaker-and-LED signal cable — it has nothing to do with the gauge, fusing, or routing of your amplifier's main power and ground runs.
Frequently Asked Questions
Does the 46KMWRGB150 work with the Kicker 41KMLC controller?
Yes. The 18 AWG conductor in this cable is built for exactly this purpose — carrying LED power and data to and from a controller like the 41KMLC — alongside the 16 AWG speaker conductor in the same jacket.
Is this wire heavy enough for the Kicker 45KM84L?
For the speaker signal at full 150W RMS amplified output, the 16 AWG conductor is under the 12 AWG our wiring guide recommends for runs over 75W RMS. It works fine for the LED side regardless, but for a full-power 45KM84L install, run separate heavier-gauge speaker wire.
What's the difference between this and standard marine speaker wire?
Standard marine speaker wire only carries the audio signal. The 46KMWRGB150 adds a second, separate 18 AWG conductor pair for RGB LED power and data in the same jacket, so you don't need to run a second cable for lighting.
Can I return unused cut wire if I order too much?
No. Cut wire sales are final. Measure your actual run length before ordering rather than estimating generously and planning to return the extra.
Does this cable actually need to be Coast Guard compliant for my boat?
Only if you're doing new-boat construction or a build that needs to pass formal survey. For a personal upgrade or retrofit, the compliance is a genuine quality signal but not a strict requirement — the cable works the same either way.
Bottom Line
The Kicker 46KMWRGB150 solves a specific wiring problem well: running speaker and RGB LED signal through one cable instead of two, built to a documented compliance standard rather than a vague “marine-grade” claim. For a KM654L or moderate-power LED speaker install paired with a 41KMLC controller, it's a genuinely convenient, well-specified cable.
It's not the right choice as your only speaker wire if you're running a fully amplified 45KM84L build at real power over distance — the 16 AWG speaker conductor is undersized for that specific case, even though the LED conductor works fine regardless. If you don't need the LED conductor at all, the plain 47KMW16400 carries the same 16 AWG speaker gauge for less than half the per-foot price. And since it's sold cut to length with no returns, measure twice before you order. But for combined speaker-and-lighting runs at moderate power, this is the cable built for exactly that job.