On a mates car, not an RS just a normal Foci, his tail lights keep failing...

I havent looked at it yet, but apparently he has changed the switch...

It sounds like a fuse keeps blowing??

Do they suffer from fuse box problems like the escort?

Any common problems to look for?

 

No Matey...No Common Problem with fuse box as i'm aware of...!

if he's recently replace a bulb i would check it's the right one it's been replace with!
otherwise it's a trial and error....i do knowyou can unplug the rear end loom from behind & inside the passenger rear boot pannel to eliminate the short if that helps!!
Good luck...Vince!