Attwood Navigation Light Bases: 2-Pin vs 3-Pin & Pole Guide

Replacing an Attwood navigation-light pole or base requires checking socket pin count, mounting shape and the specific pole-light family. Similar-looking bases can serve different all-round and bi-colour systems. Compare the exact products below before changing a wired boat installation.

Two-pin and three-pin pole-light sockets are different systems

Two-pin light base Used on specified legacy all-round and bi-colour systems. Check keyed angle, locking collar and original pole part number.
Three-pin bi-colour base The LightArmor 910R3/910V3 parts listed here support NV6LC2 and 5095 pole-light families.

These are only pin-count symbols, not actual contact positions or wiring instructions.

Do not substitute by pin count alone. Attwood 5340-54-7 is a two-pin folding all-round light with a locking collar; the manufacturer lists 910R2/910V2/910T2 compatible bases. Its use with older 911339 bases requires collar removal. Three-pin LightArmor bi-colour bases are separate.

Attwood navigation-light base comparison

MPN Connection Style Application note
910R3PB-1 3-pin Round composite Bi-colour NV6LC2/5095 series pole-light base
910V3PB-7 3-pin Rectangular composite Bi-colour NV6LC2/5095 series pole-light base
911339-1 2-pin Angled silver deck base Four-inch ZAMAK keyed base with 12-degree socket and swivel lid
911339-7 2-pin Angled silver deck base Aftermarket-package version of the 911339 angled base
911490-1 2-pin Vertical black mount Four-and-one-quarter-inch black plastic pole base with windshield-frame adapter
5340-54-7 2-pin pole Folding all-round light 54-inch incandescent pole; locking-collar compatibility must be checked
NV1012SS-1 Fixed lights Red/green LED pair Two stainless-steel oval deck-mounted sidelights
14191-7 Portable kit Battery clamp-on kit Camo portable red/green bow and white stern LEDs; not USCG-compliant

Five checks before choosing a pole base or light

  1. Find the original base's Attwood model number, if readable, and count the electrical contacts.
  2. Check the base shape: round, rectangular, 12-degree angled deck fitting or vertical mount.
  3. Match the complete pole-light series and its locking collar, not just the pin count.
  4. Separate removable all-round pole lights from fixed red/green sidelights and portable battery-powered kits.
  5. Confirm the intended vessel application and applicable navigation-light regulations before installation.

Attwood navigation lights and replacement bases

Follow the exact catalog links to check model details and current online availability.

Three-pin LightArmor pole bases

Two-pin deck and vertical bases

Folding all-round pole

Fixed navigation sidelights

Clamp-on portable kit

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