'02 Hyundai XG350 starter circuit schematic needed
 

My '02 Hyundai XG350 starter occasionally won't turn over, although the battery is new (3 months), connections are tight, and the lights, buzzer, horn, heater etc. work fine. I need a schematic of the starter to troubleshoot the problem. I suspect a part that's connected to the positive terminal connector which is causing the temporary circuit opening. Can someone identify that part and also provide me with a schematic?