Punchinello

I have a 2001 Fabia Classic 1.4 and I'm going mad trying to fix the left speaker. At the moment, it's completely dead. I've had the door card off and the head unit out and I'm fairly certain it's the wiring that's the problem. I'm fairly certain it happened when we had the external door panel replaced about two years ago after an accident, but the car was my mum's at the time and she didn't notice (how can you not notice a loss of stereo?!), so it's too late to make them fix it. As the car's now mine, I'm determined to sort it out. It's kind of tricky to explain, so I'll be as literal as possible. Using my multimeter, if I put one probe into the unit end connector, and one into the corresponding speaker end, there's no circuit for either the brown or the brown-red wire so I'm assuming nothings getting through to the speaker. However, if I put both probes into the head unit connector for the two speaker wires, there is a circuit. This isn't the case for the speaker that does work so I assume that that is the problem. Does this mean that the wires have been exposed somewhere, and they are shorting by connecting to each other? However, if I do the same thing at the speaker connector end, there isn't a short :confused: Which brings me to my other problem, how on earth can I rewire it? They seem fairly solidy in place in the little rubber thingys that enter the door, and 90% of the wiring is behind the dashboard which I have no idea how to get to. Where should I start? I'd really rather avoid going to a garage, but if I'm too far out of my depth I will. Do you know how much they'd likely charge for this? It seems a fairly straightforward problem, right? If anything is unclear, I'll explain it differently. I'd be eternally grateful for any help, monophonic sound is driving me mental. Glad to be a part of the Skoda community!