I have the above fl2 and I would like to fit front fog lights into the cut outs on the bumper ,as any one got the part numbers to hand and apart from the lights what else do I need please.

It would be worth removing blanking plates, I am almost sure you will find wiring already there.
You may also require a new indicator/headlamp switch, the toggle switch which works rear fogs also works fronts by pushing forward.

I did not realise that fogs were deleted from 13my GS until I found paperwork in my ex demo 13my GS
Extras listed were:full size spare, factory tints, auto wipers, auto headlamps and front fogs.
Except tints and spare these were all standard on my 2008 GS and 2011 GS. All FL2's (3) Gone
2011 Mercedes C180 CGI Gone
FL2 GS Auto SD with heated leather, factory tints, alloy spare and a few other bits.

Hmm I know and they do subtle mods you dont notice until a eariier car parks next to you, I noticed mine has silver rings around the fogs (they arent add ons) when the model a year earlier is just plain back, this could lead you to getting the wrong spares if you assume as a lot of folk do Im sure they are all the same.

Thanks for the reply's ,I will have a look to see if the wireing is there then see what I need to do the job ,i'am looking at fitting the foglights in October after my holidays so I have plenty of time to get the parts needed .