ABYC Boat Wiring Color Codes
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ENGINE WIRING CROSS REFERENCE CHART FOR MOST OUTBOARD ENGINES
1978 & UP
OMC Yamaha Force
1994 & UP
Power Red Red Red Red Red Red/Purple White Red
Ign. Switch White Purple Purple Yellow Blue Red/Blue Gray Red
Eng. Gnd. Black Black Black Black Black Black Black Black
Stop Circuit Orange Salmon
Black/Yellow Black/Yellow White White Black/Yellow Green/Red/
Eng. Start Yellow Yellow/Red Yellow/Red Brown Yellow Yellow/Red Brown/Yellow/
Tach Brown Gray Gray Green Purple Gray Yellow White
Battery Charge Yellow/Red Yellow
Green Yellow Yellow
Stator CDI Power Red/White/
Choke Gray/Blue Yellow/Black Purple/White Blue Green Yellow/Black Orange Blue
Overheat Tan Tan Tan (b) Pink Orange Tan Green/Yellow Light Blue
(a) Ignition Driver Systems Only. All others were battery driven systems.
(b) The stripe color on the Tan wire indicates the temperature at which the sensory trips.
(c) The White/Black wire is the cold engine temp indicator and shorts to GND. at approx. 105 ° F.
ABYC RECOMMENDED BOAT WIRING COLOR CODES
Yellow/Red Strips (YR)
Engine Start Circuit
Brown/Yellow Stripe (BY)
Bilge Blower Alternate color is Yellow (Y)
Yellow Stripe (Y)
Bilge Blower If used for DC negative, blower MUST be Brown/Yellow Stripe
Dark Gray (Gy)
Navigation Lights Fuse or Switch to lights
Dar Gray (Gy)
Generator/Alternator Charge Indicator Lights, Fuse or Switch to Pumps
Accessory Power Ammeter to alternator output and accessory fuse or switches. Distribution Panel accessory switch.
Ignition Instrument Power Ignition switch to coil and electrical instruments. Distribution Panel to electric instruments.
Cabin and instrument lights Fuse or switch to lights.
Light Blue (Lt Bl)
Oil Pressure Oil sender to gauge
Water Pressure Temperature sender to gauge
Fuel Gauge Fuel sender to gauge
Tilt/Trim down or in Tile and Trim Circuits
Tilt/Trim up or out Tilt and Trim Circuits
To help you with your wire selection, please refer to the engine wiring cross reference chart
as well as the ABYC recommended boat wiring color codes below.
CATALOG BETTER THAN THE OEM