I don't know if you've tried to get the old ones out yet but it's an easy task (from memory). Undo the two dome head stainless steel cap screws either side of the headlamp bulb cover with a 5 (maybe 4)mm allen key then ease the plastic trim out of the way. You can then see the two grey rubber boots holding the sidelight bulbs in place. I find giving them a gentle(!) grip and tug with some blunt nose pliers is the easiest way to get them out but if you can get your fingers in there then they'll pull out too.
Then just swap the dead bulbs for good bulbs and push back in.
Note, the first set I used were LEDs and only worked one way around due to polarity I think so if they don't come on straight away take out the bulb and turn it around.