The mystery deepens. I have spent all day so far on this. I have tested the fogs taking a direct feed from the battery and they work. I was convinced that the issue was a missing relay in the PDC. Some searching on the web and i found that the relay next to it (the one for the AC) could be used to test. And it worked kind of. The passenger light powered on but the one on the drivers side did not. So went and bought another relay and fitted it and........... Nothing!!!!! The don't even work with the AC relay now either!! Even the switch doesn't light up anymore. getting too dark to see now so will have to wait until later in the week. Damn lights

 

In then end I rewired the lights. I bought some better gauge wire, new relay and wired it into the stock switch. All works fine now. Was wondering if it was worth putting a lot of what I found in a post for others to use as a reference, you know, all in one post?