Speedometer Needle Randomly Working/Not Working

[JorEl]

Won't move for weeks then I'll be sat idling and she'll bounce up to 150MPH and fluxuate there for a while - Screwing up my mileage in the process!

Have cleaned the Red (LED?) at the diff but still having this problem.

Anyone?

[dvs_dave]

Bad speedo sender. Only fix is to replace it. Not a big job.

[JorEl]

Ok cheers, speedo sensor... Is located??

[dvs_dave]

You'll find it mounted on one side of the diff. Wiring connects to the rest of the loom up behind the fuel tank. Make sure you clean the signal pulse ring and adjust the gap properly.