| YAMAHA COMMON WIRING COLOR CODES | ||
|---|---|---|
| ** These are not universal for all yamaha engines ** | ||
| WIRE COLOR | Function | COLOR |
| Black | Ground |  |
| RED | BATTERY POSITIVE; SW3 Oil warning red light V4 |  |
| YELLOW | Ignition ON 12-volts; Four-stroke lighting coil |  |
| BLUE | Instrument lights, choke, choke circuit, Ground potential oil transfer, High speed Charge Coil |  |
| GREEN | Tachometer signal, lighting coil lead, knock sensor |  |
| ORANGE | Trim position sensor |  |
| PINK | Oil and overheat signal ground |  |
| WHITE | Ignition stop circuit, SW1 oil transfer off position V4 |  |
| BROWN | Start circuit Low speed charge coil; Positive "+" potential to oil transfer pump; SW2 transfer on position V4 |  |
| GRAY | Warning circuit lead; Over-rev control; Four-stroke tachometer |  |
| SKY BLUE | Trim Up |  |
| LIGHT GREEN | Trim Down |  |
| YELLOW-RED STRIPE | Diagnostic lead from ECU |  |
| PURPLE | ECU groud to enrichment solenoid V76° |  |
| BLACK/YELLOW STRIPE | Thermo sensor |  |
| BLACK/RED STRIPE | Remote oil tank ground return, PBS to tachometer, Low speed charge coil |  |
| BLACK/WHITE STRIPE | Ignition coil primary lead |  |
| GREEN/BLUE STRIPE | Crank position sensor |  |
| GREEN/RED STRIPE | Red oil warning light ground through SW3 in main tank oil sensor to tachometer |  |
| GREEN/WHITE STRIPE | Crank position sender; Lighting coil lead to rectifier |  |
| BLUE/GREEN STRIPE | Main tank oil level sensor SW2 oil transfer circuit |  |
| BLUE/RED STRIPE | Main tank oil level sensor SW3. No oil warning circuit |  |
| BLUE/WHITE STRIPE | Main tank oil level sensor SW1; Oil transfer OFF circuit |  |
| BLUE-YELLOW STRIPE | Shift cut switch |  |
| PURPLE-RED STRIPE | OX66 #1 injector |  |
| PURPLE/BLACK STRIPE | OX66 #2 injector |  |
| PURPLE/YELLOW STRIPE | OX66 #3 injector |  |
| PURPLE/GREEN STRIPE | OX66 #4 injector |  |
| PURPLE/BLUE STRIPE | OX66 #5 injector |  |
| PURPLE/WHITE STRIPE | OX66 #6 injector |  |
| RED/YELLOW STRIPE | Key on power through fuel pump relay; power to ECU; Fuel pump and fuel injectors |  |
| WHITE/RED STRIPE | #1 pulser V6 |  |
| WHITE/BLACK STRIPE | #2 pulser V6 |  |
| WHITE/YELLOW STRIPE | #3 pulser V6 |  |
| WHITE/GREEN STRIPE | #4 pulser V6 |  |
| WHITE/BLUE STRIPE | #5 pulser V6 |  |
| WHITE/BROWN STRIPE | #6 pulser V6 |  |
| YELLOW/WHITE STRIPE | Electric fuel pump for electric carb system (ECS) |  |