Failed yesterday at IVA test.
Over centre catches OK. California Vitaloni mirrors OK. Loud exhaust OK.

Failed on penultimate test, the speedo accuracy. Not possible to get stable and accurate reading.

I have VDO electronic speedo with Alfa 164 and 5 speed gearbox. I have inductive sensor and shielded cable earthed at sensor end.

I tried to get Alfa gearbox sender working with VDO but failed. Any ideas? Could it be broken?

I fixed VDO sensor on chassis to sense drive shaft bolts. Is it better to be perpendicular to the nut heads, or sensor in the same plane as shaft rotatation?
Bracket is 1mm aluminium plate. Could vibration be issue?

Can any inductive sensor be used. Ebay or RS?

Regards
Steve