2004.5 sportsman 500 no power

Hello, hope someone can help. I have a 2004.5 sportsman that has no power. It only has 300 miles on it. I follow the power from the fusible link and it does have power. Not sure where it stops. I have this problem for quite awhile and I quit on it. I got frustrated checking. It has a brand new battery, ecm, and ignition. The starter was bad and I just pull started it. Not sure if that helps. Can someone please help