We replaced my engine with a rebuild from another 2008 400ex. The outer bearing was shot on the rebuilt case but we had juice and it was turning but not engaging. We swapped out the outer bearing and now it just shorts out when we hit the start button and we have to wait 5 minutes or so for the electrical system to reset itself before we have power again. The fuse is good. Any ideas? I'm just repeating what I was told so hopefully I got all of the terminology right.