Yt 125 taillight problems

[Trevor58]

So I have a yt 125 that keeps blowing taillights but has had a well working headlight for about a year now...could someone tell me why I keep blowing taillights and not headlights? :wondering

[RubberSalt]

Have to use OEM head lights and tail lights. They balance the system out. Anything else, and to much voltage goes to the tail light blowing them.