Ive tested the battery. Only shows 12v when running. Pulled the plug off the Cdi box and tested ohms on the plug and nothing. I dont know where the regulator and rectifier are but how else do I check all the parts of the charging system so I know I buy the right 200 dollar part ugh. Someone please help. Lastly, I have a clicking in the rear I'm assuming u joint but how do I know if it's a u joint or cv joint for sure?