Ok renault trafic front fog light installation. If the van is pre wired. You change the light / indicator stalk to one which has front fog light mode. You take the steering colum casings of ( no need to remove steering wheel)and chandge the leaver its a simple slide out and click new one in. These can be bought from dealers at stupid prices or you can pick them up on eBay cheap. Lots of the renault range, Clio, espace etc use the same stalk. Once that is installed and the fog lights of course there is a small relay board in side the cab under the dash (acces is easy) pop down to your local dealer and get a front fog relay, they are rectangular ones and look about half the size of a standard square looking one. Part number:-4kA29FP Or :-7700414484. Of course nothing is cheap from a dealer, but you should be able to pick one up for about£10. Once that is installed check the fuse board and a relevant rated fuse is fitted and you should have working lights.