"Here is something I saved fro
"Here is something I saved from a post a while back
Boat wiring was standardized quite a few years ago.
Far as I know, these are the standards:
Black--------All Grounds
Black with Yellow stripe------Magneto/short to kill
Gray------------Tachometer signal
Yellow with Black stripe---------Choke
Red-----------Unprotected(12V+)from battery
Red with Purple stripe-----------Protected(+12V)from battery
Purple-------------(+12V)from ignition switch
Tan-----------Overheat sensor to warning horn
Pink-------------Sending unit to fuel guage
Yellow with Red stripe----Ignition switch to starter solenoid
Yellow-----------------charging stator to rectifier
Lt.Blue with White stripe--------Trim up
Green with White stripe-----------Trim down
Some standard colors for boats since 1980 are as follows:
• heavy red 10 guage (main battery)
• heavy black (main ground)
• purple (ignition)
• yellow (starter solonoid)
• grey (tachometer)
• brown (temperature)
• blue (oil pressure)
• brown with stripe (alarm)
Accesories
• pink (fuel sending unit)
• yellow (blower)
• brown (bilge pump)
• grey (navigation lights)
• heavy green (bonding wire)
• red (misc electrical add-ons , vhf , depth finder, stereo, radar, power supplies)"