Yesterday I was plodding along minding my own business when I suddenly heard a loud rattle beneath my feet. I popped under the vehicle and found a short length of wire wrapped around the propshaft. The vehicle is a 1989 90 fitted with 300tdi and r380 (retaining the original wiring loom). It transpired that the wire was the one connected to the reverse light switch. It was a 2-core within a black sheath. What is perplexing me is the fact that both colours are the same (green with a brown or purple trace). Are both these wires connected to the reverse light switch? If not, I presume that one core is connected to the switch (the switch being earthed via the gearbox) and the other? Right now I can see two stripped strands when i look into the engine bay from underneath.