So decided to get the S4 back up on the 2poster lift and pull off the bumper, and pull out the headlights. Looks like they have been opened before for repairs (presumably by Audi themselves). So was quite easy to split. Painted the chrome strip and the grey light enclosure with a black vinyl paint (similar to plasti-dip) so it can be removed in the future. Works a treat! Did do the de-tangoing while I was at it which took ages for the first one (took 5 mins for the second!) but unfortunatly I cant find any chrome bulbs that will do the job, so went and bought a couple of orange indicator bulbs. Doesnt look great, but at least its legal. Does anyone have any chromed bulbs for sale? Pity it takes removing the whole headlight assembly to access the indicator bulbs!