If you have a hazzard button and all lights flash when you use it, then it looks like a faulty switch. Had both left and right switches replaced under warranty.
If it's out of warrenty, there is a post on the site about where to get the switch only for a few quid as oppossed to replacing the whole switch cluster.
i,ve fixed it with good old wd 40, we were in scotland last week and it pissed down, obviosly got into switch, how are you and the good lady keeping shep