i got my hid kit from this fella charlie put me onto on another forum

i didn't notice a huge difference to be honest when i fitted them, but for the money they were brighter yes

but the other day when i was out in one of the works vans i really did notice the difference "normal" headlights made compared to the hid's

the ones i got were 2 pin versions though, so the sierra's have 3 pins sow ould need to have the flashier versions for the dip/dim thing yes?