Thanks for your help Gareth, I put my meter on to the sender plug connection and to earth on the rear shocker head bolt, all I could get was 6.5 volts?
I was expecting 12v. Do you know were this pair run to from the sender unit, ie, fuse or gauge?
Were off to the south of France in a fortnight and I would like to know how much fuel I have. This has only just started happening.
Thanks again for your help. Andy.