Hi guys , I was bit unsatisfied with the lights of my Polo so wanted to upgrade the OEM halonix bulbs , I purchased philips xtreme vision H4 and got them changed at local service center , it was simple plug and play operation , no cutting no relay. Posting few pics for quick comparison , both cars are VW Polo , left one belongs to my friend (OEM bulbs )and right one (White) is mine and has philips bulbs.