Every model used a different color code. Some changed over time. At times, management discovered employees were not using the specified colors. Colors changed when outside mast vendors supplied the mast wiring. Furling masts were often different than non furling masts. Start with your Owner’s Manual but expect surprises. Confirm what you have by using an inexpensive Volt Ohm Meter. 

Our harness assumes three mast mounted lights. If you don’t have all three lights one or two of the conductors will not be used until you upgrade.

Positive leads are: Red, Anchor Light; white, Steaming Light (or Bow Light on some switch panels); green, Deck Light.

Black is the common ground that provides negative for all three lights.

You will need a 2 or 4 prong plug depending on the number of bulbs. Early boats didn’t have standard mast navigation lights. The plug must have one ground pin plus one additional pin for each bulb on the mast. Extra unused pins are OK. Plastic and metal plugs have different diameters and fastener hole patterns so replacing like for like will be easiest.