Overview

The Attwood Marine 911339-7 is a rectangular 2-pin light base for 12 degree angled pole lights on 12V DC systems. It has a 4 x 1-5/8 inch footprint, uses a 1-3/8 inch installation hole, and mounts with three countersunk fastener holes, so it is a straightforward replacement when you need the same deck cutout and pole style.

This is a 2-wire base with 7-1/2 inch hard wire leads for direct connection into your navigation light circuit. The socket is keyed so the pole can only go in the correct way, and the swivel cover closes over the opening when the light pole is removed. Nickel-plated contacts and tinned wire leads help the connection hold up better around spray, washdowns, and damp storage conditions.

The Zamak body makes sense on boats that use a removable stern all-round light or an angled combination sidelight at the bow. It is a practical fit for small fishing boats, runabouts, and other layouts where the light is stowed between trips and the socket needs to stay covered when not in use.

Key features

• Rectangular 2-pin base for 12 degree angled pole lights
• 12V DC only
• 4 x 1-5/8 inch base size with a 1-3/8 inch installation hole
• Three countersunk mounting holes for a secure deck installation
• Keyed socket helps prevent incorrect pole insertion
• Swivel cover closes over the socket when the pole is removed
• 7-1/2 inch hard wire leads for direct wiring
• Nickel-plated multi-crimp contacts and tinned wire leads for better corrosion resistance
• Zamak construction

Installation and fit

This base is installed on a flat mounting surface with room for the cover to rotate open and closed. The compact footprint helps when deck space is limited, but the mounting area still needs to match the 1-3/8 inch center hole and the three-hole fastener pattern. For a clean replacement job, it is worth checking the existing cutout, pole angle, and wire access before ordering.

On boats using a removable navigation pole, the base is positioned at the bow for a combination sidelight or at the stern for an all-round light, depending on the lighting setup already on board. The two-wire layout connects one lead to battery negative and the other to the switched positive feed from the navigation light circuit, with the positive side fused in the boat's wiring system.

Compatibility and use

It fits Attwood 7100 Series all-round lights and Attwood combination sidelights that use an angled pole. The keyed 2-pin socket matters here, because it needs to match the pole style already on the boat. This is not a universal base for every plug-in pole light, so the pole connection, angle, and deck cutout should all be checked together.

This base suits boaters replacing a worn or corroded socket without changing the rest of the light system. It also works well where the pole is removed often for trailering, storage, or keeping the deck clear at the dock, since the swivel cover keeps the opening closed when the light is stowed.