the slimmer ones are the new digital ballasts.they run cooler than the regular ones.those are the one's I used on my own car.Boss05 wrote:Hey guys i was just wondering what the differences are between Slim Ballast Hids kits and Regular ballast kits??? I am looking to change my Fog lights to HID on my M35 and Silveradohttp://www.xenonrider.com/images/slim-dual.JPG
No problem!Boss05 wrote:thanks for your help