My 08 420 rancher won't start after rebuild. When i turn the key to the on position nothing happens exept for the N light coming on. Now this is my first rebuild and I went by the book and it is turning over has compresion but no fire and it seems that the fuel pump is not turning on.. I am possitive that everything is hooked up . I am scared that it is the computer or something to do with it has anyone had this problem or know what the fix is?