2005-2009 Honda TRX400EX/TRX400X Service Manual, Page 315Get this manual
ELECTRIC STARTER Remove the wi re band securing the starter relay switch coverRelease the relay cover from the starter relay switch
Disconnect the battery positive (+) cable and starter motor cable by remov ing the terminal nuts and spring washers
Connect the fully charged 12 battery positive (+) terminal to the Yellowred wire termina and negative terminal to the Ye ll owgreen wire termina of the sta rter relay switch There should be continuity between the cable terminals while the battery is connectedand no continuity when the battery is disconnected