I've joined this group to find out some tips for my Disco. It's a S11 TD5 with 100k on the clock. I bought it about 3 years ago and have had a dream run. We've taken it over to Fraser Island and a few treks in southern Queensland. I'm trying to fix the driving lights. they are original equipment and I've narowed it down to 2 possible faults. Either the console switch or the relay box is faulty. Any suggestions??

mm! sound like either the console switch or the relay box..you could try by-passing the switch with a piece of wire and the same for the relay, if you don't have another known good one to swap with.