Just to add some other info for you that I have found
I have uploaded a copy of the Citroen fitting guide for the front fog lights. ...See Here
From what I can see this is what you would need and I've posted Citroen Service prices where they were provided.
Part No Description Quantity Price per Item
9682S3 Fog light kit x1 £57.34
6206J6 Fog headlight x2 approx £15 each on fleabay
7452VP Headlight Cap (black) x1 £26.75
7452VQ Headlight Cap (black) x1 £26.75
7452VW Headlight Cap (chrome) x1 £124.24
7452VX Headlight Cap (chrome) x1 £124.24
6924F7 Screw cblx x2 £0.48
Note you will need to hook up to Lexia to activate and will need to check if the stalk will move in the direction required to turn the lights on
3rensho can you let us know which parts you bought and what it cost you?
I haven't tried this yet so I can't confirm how accurate the above info is but I will be giving it a go when I have time.
PS. Check the difference between the chrome and plain headlight caps!!