Attwood 910R3PB-1 Round 3-Pin Nav Light Base

The Attwood 910R3PB-1 is the round base that anchors an Attwood bi-color pole light to your deck. It isn't the light itself. It's the 3-pin socket the light stem drops into, and it's the part that takes the abuse of being underfoot, rained on, and baked in the sun season after season. If you're rigging a fresh bow light or replacing a base that's cracked or corroded, this is the piece you need.

The design is simple on purpose. A round 2.23 inch footprint sits flush on the foredeck or a small mounting block, and the 3-pin connector inside carries power up to the light. You wire the base once. After that, the pole light plugs in and locks in place, and it pulls right back out when you're done for the day. That's the whole point of a pole-and-base system. Trailer boaters love it because a tall bow light and a low garage door don't mix, and a light left standing on a trailer down the highway rarely survives long. Pull the light, stow it in a cushioned spot, and the base stays behind flush and out of the way.

This is the 3-pin version, which matters. Attwood builds these lights and bases in a couple of pin configurations, and the light stem has to match the base pin count to seat and make contact. The 910R3PB-1 is set up for the 3-pin NV6LC2 lights and the older 5095 series bi-color heads. If your light is a 3-pin bi-color from either of those families, this base is the correct mate.

A quick word on what a bi-color light actually does, since the base is only half the story. A bi-color shows red to port and green to starboard from a single fixture up on the bow. It's the combination sidelight setup you see on a lot of smaller powerboats, where running two separate side lights doesn't make sense. Paired with a stern light, it covers the running-light picture other boats need to read your heading after dark. The base doesn't change any of that. It just holds the light where it belongs and feeds it power.

Construction is straightforward marine-grade stuff. The base is finished in black to disappear against dark nonskid and rubrails, and the hardware core is stainless steel, so the connection point that lives out in the weather isn't going to rust into a lump. Salt, spray, and UV are hard on cheap plastic bases, and a corroded pin is the classic reason a nav light flickers or dies right when you need it. Starting with a clean, solid base is cheap insurance against a dead light three miles from the ramp.

Install is about as friendly as marine wiring gets. You pick your spot on the bow with a clear sightline, drill for the wire run and the mounting screws, seal it up with a dab of marine sealant, and connect your positive and ground. Because the base is round and compact, it fits tight bow decks and pulpits where a bigger footprint won't. Just confirm your existing light is a 3-pin NV6LC2 or 5095 bi-color before you order, so the pins line up.

One thing to be clear about: this listing is the base only. It ships in bulk packaging, and the pole light that plugs into it is sold separately. If you need the light too, grab the matching NV6LC2 bi-color head alongside it. But if your light is fine and it's the base that gave out, or you're pre-wiring a new rig and want the deck side done first, the 910R3PB-1 is exactly the part. Order it, wire it in, and get your running lights back to legal and reliable.