How to replace wiring for a tail light.?

I own a 2001 Ford Escort and the rear left blinker/brake light does not work. It's not at the blinker switch and it's not at the bulb connector. So it must be a short in the wiring. Is this something I can change myself? If any one knows how to replace the wiring for a tail light in any kind of car, just give me a rough description of how to do it.



Thanks.How to replace wiring for a tail light.?try the flasher unit or a possible fuse 1st - more likely than the wiring, unless the wires got damaged or rusted