E30 Zone

My speedo has just stopped working?

Most probable cuase wil be a broken wire at or near the sensor(which is located on the diff cover plate)

You need to track down where the wire is broken and either repair it or cut it out and replace it

I have same problem, the wire going from the diff does break allot, usually at the back, i saw it easy, just cut it of arond 10 cm and replace it with a shiny new one.