I have a problem with the Tail Light fuse blowing.
I have looked up on the wiring diagram and this fuse does the Park lights, tail lights, number plate light, dash and switch Illumination and headlight warning chime.
I have disconnected every external light and the trailer plug and it still blows the fuse, have also been checking every bit of wiring i can find for damage but cannot find any.
I have been trying to fix this for 3 weeks now and it is driving me mad and can't use the car at night while it is like it.

Anybody have any ideas how to find a short like this as it is driving me nuts and I am too stingy to pay an auto electrician.