I have an 03 predator 500, I have been having some problems with it. I took it out for a ride it rode fine then died, back fired, then came back and it did this a few times. Now it will start but when I turn the head lights on it will die and then it there will be no power for a little while. I went through all the wiring cleaned and put electrical grease on all the connections, cleaned and tighten all the grounds. I'm lost, if any one can help that would be great!