Lumishore SUPRA SMX i-Connect Install Kit

The Lumishore SUPRA SMX i-Connect Install Kit is the piece that ties a SUPRA SMX underwater lighting system together. On its own, an SMX54 light is just a fixture. This kit is the control hub and junction box that gives it power, protection, and control. If you're building out underwater lights on your boat, this is the part that makes the whole thing behave like a system instead of a tangle of wires under the deck.

Here's the short version of what it does. Power comes into the hub, and the hub distributes it out to your lights through plug-and-play connections. Each light gets its own replaceable blade fuse and its own status indication LED right on the hub. So if a light goes dark, you don't guess. You look at the hub, spot the LED that isn't lit, pull the blade fuse, and you're back in business. That kind of at-a-glance troubleshooting matters when the hub is tucked behind a bilge panel and you're working with a flashlight in your teeth.

The connectors are the part installers appreciate most. They're IP68 field-installable connectors, and they come supplied in the kit. That means you make your connections waterproof right there at the install, no special shop, no sending anything out. A built-in switching power relay handles the load so you're not wiring in a separate relay, and a built-in noise filter keeps the light electronics from throwing interference back onto your DC system. Little touches, but they're the difference between a clean install and one you're chasing gremlins on all season.

The design goal here was ease of install, and it shows. Plug-and-play connections mean you're matching keyed connectors, not deciphering a wiring diagram at midnight. That keeps the labor down whether you're doing it yourself or handing it to your rigger. For a first-time underwater-lighting install, that lower barrier is genuinely helpful. You get a professional result without needing to be an electrician.

Control is flexible. You can run the whole system from a certified MFD at the helm, or from the EOS-LUX-SUPRA display if you'd rather have a dedicated controller. Either way you get full control over your SUPRA SMX lights from one spot. That's a big deal on a boat where the last thing you want is another one-off switch panel crammed into the dash.

Scaling is where this kit earns its keep on bigger boats. One hub runs up to four SMX54 lights. And you can run up to four hubs in a single SMX installation. So a modest transom setup and a full wrap-around array on a 40-footer both start from the same building block. You just add hubs as the light count grows.

A few honest install notes from the water. Run properly sized power cable from the battery to the hub. On longer runs, undersized wire causes voltage drop, and dim or flickering lights almost always trace back to that. Put a properly rated breaker at the battery end. The kit fuses each light, but you still want main circuit protection at the source. And if you're on an aluminum or steel boat, pay attention to your grounding and give the lights a clean negative path to keep interference out of the picture. None of this is hard. It's just the stuff that separates an install that works for years from one that gives you fits.

Who's this for? Anyone putting SUPRA SMX lights on their boat, full stop. It's not a light itself, so don't order it expecting to unbox a fixture. It's the control kit that the SMX54 lights need to run right. Pair it with your lights and you've got a proper, fused, controllable, waterproof underwater lighting system backed by a 3-year Lumishore warranty. That's how we'd rig it up on our own boats.