I did the 18W Malibu Bulb change, it was fine until I changed the headlights bulbs to PIAA Xtreme White. They were too yellow with the headlights. PIAA's match for the Malibu bulbs are the 18W W2 Xtreme White. I think W2 and 194 are the same blub. These were way brighter than the original 168 and they matched headlights perfectly.