90 hp yam 2s Oil sending unit electrical scheme?

[Snook305]

I am looking for 90 hp Yamaha 2 stroke, vro sending unit electrical scheme or schematics . I want to connect the oil sending unit so the horn blows when tank gets low. Would anybody know where I can get these instructions or where to look?

[boscoe99]

The tank has a sensor assembly in it that should cause the engine to go into RPM reduction mode and the horn to sound if and when the tank gets low on oil. Also, it will cause certain tachometers to provide a visual indication as well.

But to answer your question, the applicable service manual will have a wiring diagram in it that depicts the electrical wiring of the system.