2006 Honda TRX680 Rincon Factory Service Manual, Page 535Get this manual
ELECTRIC STARTER CIRCUIT INSPECTION Remove the rear fender (page 3-14)Disconnect the starter relay switch 2P (Natural) connectorGROUND LINE Check for continuity between the Greenblack wire terminal of the wire harness side connector and groundIf there is continuity when the transmission is in neutral or when the transmission is in drive and the front brake lever is squeezed, the ground circuit is normalPOWER INPUT LINE Turn the engine stop switch "O" and the ignition switch ONMeasure the voltage between the Yellowred wire terminal (+) of the wire harness side connector and groundIf the battery voltage appears only when the starter switch is pushed, the circuit is normal2P (NATURAL) CONNECTOR