I have a 2006 YFZ450 and now the head lights and tail light do not work. Everything was working fine for years, I took off the back fender/battery/aribox off to access the back of the quad. I put everything back together and went for a ride. On my ride my bike just lost power and came to a rolling stop. I immediately went to the battery to see if something came undone, all looked good. Checked the connections and the fuses. Attempted to start the quad and I had zero power, again did another inspection and I found nothing. Adjusted the battery because it looked like in wasn't in place and now I can start my quad and it runs fine, but I have no headlights and tail light. I do have the neutral light when I turn the ignition but that's it. I ohm'd the fuse and they are fine, I also have 12vdc from the battery. I know how to use a mutil-meter, I would just like to get a procedure on how to start the troubleshooting process. Any ideas?