Marine Wire Color Codes


COLOR

DESCRIPTION

Black

Grounds-General

Blk/Blu

Lighting Grounds

Blk/Brn

Pump Grounds

Blk/Grn

Water Level Sender Ground

Blk/Gry

Nav Light Grounds

Blk/Org

Isolated Accessory Grounds

Blk/Red

Voltmeter Grounds

Blk/Wht

Battery Parallel Solenoid

Blk/Yel

Ignition stop

Brown

Pumps-General, Bilge or Sump
(Manually Switched)(Also alternator starter to Ignition)

Brn/Blu

Head Pump

Brn/Grn

Fresh Water Pump/Water Maker

Brn/Org

Power feed to Auto Bilge Switches-Pumps, Fuel/Oil Transfer or Priming

Brn/Red

Pumps, Bilge or Sump

Brn/Vio

Washdown Pump

Brn/Wht

Trim position sender

Brn/Yel

Baitwell or Aerator

Red

Battery Feeds Unprotected

Red/Vio

Misc. Accy. Main Feed Protected (fused) from battery to trim panel

Pink

Fuel Sender

Orange

Accessories common feed- Dist Panel to Acc switch-Anode Electrode-Mercathode

Org/Blk

Audio System Feed

Org/Blu

Communications Equipment

Org/Brn

Electric Head-Sanitation System

Org/Grn

Wiper Starboard

Org/Red

Wiper Port

Org/Vio

Navigation Equipment

Org/Wht

Wiper Center

Org/Yel

Diesel Pre-heat

Yellow

Bilge Blowers -(also alternator DC output)

Yel/Blk

Choke - Neutral safety trans mounted

Yel/Org

Powered Ventilation, Fans

Yel/Red

Start Solenoid(starting circuit), Neutral Safety

Yel/Wht

Rudder Angle Sender

Green

Bonding

Grn/Org

Engine Independent Trim down

Grn/Red

Stop Solenoid/Kill Switch

Grn/Wht

Engine Trim in and or tilt down

Grn/Yel

AC Grounding

Blue

Instrument & General Lighting

Blu/Blk

Cabin Lights

Blu/Brn

Oil Temp Send

Blu/Grn

Cabin or Cockpit Lights Starboard

Blu/Org

Engine Independent Tilt Up

Blu/Red

Cabin or Cockpit Lights Port

Blu/Vio

Courtesy, Boarding Lighting

Blu/Wht

Engine Trim Out and/or Tilt Up

Blu/Yel

Lighting Circuits to Remote Send

Light Blue

Oil Pressure

Violet

12v Ignition-Generator or Engine

Vio/Grn

I/O Trim Down

Vio/Red

Engine or Generator Battery + from Breaker

Vio/Wht

Trim "Trailer" switch

Vio/Yel

I/O Trim Up (ballast bypass)

Gray

Navigation (running) Lights, Tach. Send

Gry/Blk

Mast Light

Gry/Blu

Spreader/Flood Lights

Gry/Grn

Strobe or Beacon

Gry/Org

Docking Lights

Gry/Red

Spotlight Remote

Gry/Vio

Windlass/Winch

Gry/Wht

Anchor Light

White

General Alarm Usage, Yamaha Kill Switch

Wht/Blu

Oil Press Alarm or Indicator

Wht/Brn

Temperature Alarm or Indicator

Wht/Grn

Water Press/Flow Alarm or Indicator -
((Ignition module to Dist.)Mercury Thunderbolt Ignition)

Wht/Org

Fire Alarm or Indicator

Wht/Red

Fuel Alarm or Indicator -
((Ignition module to Dist.)Mercury Thunderbolt Ignition)

Wht/Vio

Voltage Alarm or Indicator

Wht/Yel

Air Flow Alarm or Indicator

Tan

Water Temp sender

Tan/Blu

Warning system sense wire (Audio warning)