I woke up yesterday and the indicators, brake lights and reverse lights have all decided to stop working. I've checked all the fuses, and they look 100%. The only thing I can possible attribute it to, was that it was a very wet drive 3 days ago.

Where do I troubleshoot next??

Headlights, dashlights, parking, lights etc all work normally.

_________________
1998 Rover Mk VII
2001 Honda CBR 929RR (street)
2014 BMW S1000RR (track)

Check the earth connections inside the boot - sounds like it could be a bad earth issue.

_________________
Dave - 64 Nurburg White Morris 850 & 67 Morris Mini Deluxe (Bro's Car)
Previous Rides - 62 Morris 850 (Sold '03 - Now 'Lulu-62') & 76 Clubman S (Sold '99 - SFW-863)
+ Too many other classics

I'm an idiot. I thought I'd looked at every single fuse, but I didn't look closely enough. One of them was popped right down near the base, could barely see it.

All is well in the world again! Thanks.

_________________
1998 Rover Mk VII
2001 Honda CBR 929RR (street)
2014 BMW S1000RR (track)

Have your trailer hitched up recently?
Did you just tap into the original wiring for the trailer to piggy back off?