I have a fiat 500, 2009, the rear brake lights, dash panel, rear wipers were faulty, the 5amp fuse kept blowing so the wiring harness was repaired. I now have further faults and the wiring harness under the glove box is in such a bad way that the garage are now saying a new wiring loom is needed and potentially new ECU is required. I challenged this and said they worked on the wiring harness under the glove box, but they are saying that they did not work on the fuse box in the glove box and only worked not the rear of the vehicle. I am a complete novice and don't know how to challenge them so need advice on where the fuse box is located and would the garage have had to work on the wiring under the glove box?/. thank you