I'm no expert, but I think you have to first take out your headlights and put the new ones in. Then the same with the back. Make sure that you don't break the bulbs or else there will be a mess and you will have to buy new ones.
HI.. i bought new indicators for bmw 318se-1999, but I dont know how to replace them, do i need to take the headlights out? or just pull them out? any helps? many thanks