I don’t know clearly the reason why auto led headlight bulbs need ballast.

Because almost of all of our auto led headlight bulbs are plug and play.

Those auto led headlight bulbs needn’t ballasts.

In order to make you clearly our auto led headlight bulbs without ballast, I will show you pictures as below.

Hope you come to talk with us auto led headlight bulbs need ballast at any time.

My factory started to produce auto led headlight bulbs since 2013.

So I am sure our auto led headlight bulbs must have a ready market in your country.