Marine Wire Color Code
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Marine Wire Color Code

Marine and boat wire color codes are the recommendations for the colors of the primary wire established by the The American Boat and Yacht Council Association.

Below are the current specifications:

  • Red: Positive wires in DC circuits.
  • Black or Yellow: Negative ground or return.
  • Yellow with Red Stripe: Starting circuit wiring.
  • Green or Green with Yellow Stripe: Bonding systems and grounding wires.
  • Dark Blue: Cabin or general area lighting circuits.
  • Light Blue: Oil pressure senders or instrument wiring.
  • Orange: Common feed for accessories.
  • Brown: Pump wires (e.g., bilge or freshwater), generator armature, alternator charge light.
  • Brown with Yellow Stripe: Bilge blowers.
  • Gray: Navigation and anchor light circuits, tachometer.
  • Pink: Fuel sender wiring.
  • Purple: Ignition switch circuits (ignition on/run), instrument feed.
  • Tan: Water temperature sender wiring.

marine wire color code, boat wire, marine wire, marine grade wire

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Author Bio

Vita Chernikhovska

is a dedicated content creator at Nassau National Cable, where she simplifies complex electrical concepts for a broad audience. With over a decade of experience in educational content and five years specializing in wire and cable, her work has been cited by authoritative sources, including the New York Times. Vita's popular series, such as 'What is the amp rating for a cable size' and 'How to wire different switches and appliances,' make technical information accessible. She also interviews industry professionals and contributes regularly to the wire and cable podcast.

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