My buddy is all about the LED's. If you want them to output any light for driving. You need the kits with the ballasts/voltage regulators. The kits are 200ish.
I have LED fogs with out these ballasts. And they do jack **** for lighting output other than looking a cool colour.
I have LED fogs with out these ballasts. And they do jack **** for lighting output other than looking a cool colour.