Well here I go with a quick write up. Apologies that there are no pics but I'll try to be clear.
So, I started off by buying a pair of these for the dips;
and a pair of these for the mains;
At first I thought I was going to be able to manage with the headlights in but after dropping the flamin' clip inside the headlight (grrrr) decided to remove the bumper, I followed this guy's instructions;
and it was remarkably easy. I didn't have the torx socket for the large bolts on the slam panel so I used a large flat bladed screwdriver and they came out very easily. Rest the bumper on some carpet or old curtain to make sure you don't scratch it. Headlight removal was then very easy, just 2 x 10mm bolts. Tip, mark the bolt head position to help with realigning the headlight so trim lines are nice and neat when refitting.
With the headlights out I started on the dips first. These bulbs are pretty clever as the base plate locks onto the bulb meaning you put the base plate into the headlight housing first and then twist and lock the bulb into place. For those of you who have struggled getting the bulb clip over HID wiring, you'll know what a pain this can be. Cut out a suitable sized hole for the grommet and then fit it over the heat sink strapping, extending it out as per instructions. Refit grommet and dips done.
Mains are even easier! The H1s fit straight in and the base plate isn't separate to the bulb as there is no need. You'll be presented with 2 wires though, this is easy. Remove the earth to the bulb holder and connect the smaller of the 2 wires (from the bulb) to this and the larger to the 12v to the bulb. You can't do this wrong as the connections are different sizes. Again cut the grommet out and fit the heat sink as per instructions.
Check everything is working and then refit.
Refit is the exact reverse of removal. I managed this on my own but it might be easier with 2 people.
The lights are great, matching the DRLs and providing a great light. The bulbs are EU stamped meaning they are 100% legal. I have travelled down country lanes, B roads, A roads, urban roads and motorways and never once had people flash me. No warning lights just white light from the front. Result!!!