Continuing speedo problems S4

[jerry]

When I put my refurbished S4 back on the road in Thailand in Novemebr 2023 I found that the speedo was not working ,

So first i replaced speedo cable but that was not the problem ,, I have a spare speedo that I know is good and that made no difference ,, so it has to be the speedo drive on the axle a 25mm one .

Not available in Thailand I ordered a new 25mm axle speedo drive in UK from a certain Ducati dealer , along witrh another spare cable for S4.... i also tested the Thai bikes speedo on my UK M750 for 10 miles and it worked flawlessly .



Now back in Thailand I have fitted the new 25mm speedo drive ,, but the new cable supplied is too short by 100mm ??? even though its in a Ducati packet marked S4 its clearly for a M750 ,600 or 900 ??????????

but I have a spare good older speedo cable of correct length with same fittings , thread and inner cable length so not a big issues but the new Speedo drive is not working ?

It looks ok on the bench , the tabs seem ok and its assembled to wheel correctly but its not working ???? when wheel spins ?????

I will see if i can find the crapped out old one , ???


any ideas ??? should i post photos