Ballast Making Noise
 

ballast is making a high pitch noise on one side. anyone else having this problem? or is this normal?

hid ballast? it's normal

you have a fat ballast dont you?

It's normal coming from the ballast; does it for me too...

have the slim but thanks! didnt even have to adjust anything!

Most the time when I hear a noise its because there is a short somewhere. I used to hear this on my bike a lot. I would unplug and re plug everything and it would stop. Probably loose connections.

Its because of the cheap transformers they use.
I would not invest in doing this, but you can pot the thing in resin and it will hold the wingdings solid, so no more whining.

What's the difference between the "fat" and "skinny" ballasts?

Most ballasts should be potted so choke coils shouldn't whine like that?