Thanks guys - its a new speedo and motor - it works fine for 99.9% of a heat or all of it, will go from standstill at the start etc and most of the heat and doesn't fail all the time just after a jump and as ever not every time.
Just had the gear boxes apart for a look and the centre diff etc (deep joy), all looks well so maybe not mechanical.
I'll try a different motor see what happens and move onto the speedo etc.
Cheers
|