Warning Lights
If they are the same as on a YSM 12, they are Oil Pressure, Charging, and Temperature warning lights. IF you switch the key on, w/o starting the motor, the Oil and Charging lights will be on. The Temp will not be. You can disconnect the Oil pressure sending unit wire and figure out which one is Oil.On my YSM 12, the wires are identified by a letter near the connector. The letters are something like O, C and T.