B4 TDI Rev Counter

[Subsea7]

Its not working, not a flicker - got the schematics for the 1Z B4 but its only shows fuse F12 supplying the power, also to the reversing light switch...which works - well the lights do, so not that, but the owner before me had fitted reversing sensors which I disconnected due to the obvious connection but still no joy. CHecked all the fuses in the scuttle panel box, all ok 0 are there any other fuses anywhere?

Any ideas? Anyone know where the speed sensor is, and how you get the instruments out? Cant see no screws....

Cheers for any help you can give.

Weirdly, also the rear demister seems dead, and the fag lighter is only getting warm, like its getting reduced voltage or a bad earth, but everything else works. Oh and no glowplug light but starts like a peach.