Simon, thanks for quick reply.
Ja, I was looking through various site pages to see if I can get to change my Number Plate Light Unit and install the LED unit, when I came across your pic's with the bright number-plate illumination and head-light up-date.
I have a DS "5" and have changed the H7 "dip" with HID, but due to the "NEW" H1 Bulb holder fitting now used, not able to fit the HID H1!
The Fog's H11 have been replaced with Cree 80w Leds from car-mod-shop (near Sidmouth-Devon)
Did the same with Reverse lights, put in the 80 Cree...magical difference.
Then I changed the Indicators bulbs, the brake light bulbs including the rear Fog. Very noticeable different.
Interior foot-well lighting, glove-box, boot compartment lights (501's) changed to leds.
I have contacted my local citroen dealer to see if the DS4 / 3 number plate lights are the same, if so, I will have these change asap.
Simon, once again thanks for the info, will have a look see on Amazon.
Roy
http://ds5owners.co.uk/ds5forum/styling-performance-upgrading-6/
http://ds5owners.co.uk/ds5forum/styling-performance-upgrading-6/cree-led-h11-80w-fog-lights/
http://ds5owners.co.uk/ds5forum/styling-performance-upgrading-6/alloy-wheel-protectors/
Enjoy