Speedo fault-what ya's think?

[martint]

My speedo sometimes just dies for a minute or two. I read somewhere that if, when it dies,my mile counter doesnt work as well, then its nowt wrong with the clocks. Tried having a look beside o/s drive shaft but couldnt see anything that looks like a speedo transducer/drive. Then i was told from someone that they thought it was on top o g-box( what i thought was reversing sensor!) then i noticed a white plug on the rear o the box and roughly in the middle.couldnt be it could it? If anyone knows,exactly where is it?How far from drive shaft is it?
My cars a 2001 406hdi(90). And will it have a vsi interface behind glovebox? Guy at peugeot said he didnt think it did have it. Oh can anyone tell me what the wires are that goto the brakes.?not the abs.
One of the wires has a break nearly all the way thru- couldnt be happening cos o it? Know these cars are weird regarding electronics

[lozz]

as far as im aware its bolted to side of box and is near drive shaft,
imight be wrong tho,
ithink top one is reverse sensor,

[andymccabe13]

mynes the same although it is a 1.9 td apparently it is a white looking plug of some sort