As anyone got the link to speedo fix as i cant find it.and as you can see from the pics i was under the inpression that there was a wire on the circit board that need to be sratched away before fitting these convertors.heres what going on.

Heres some more.think im going to start again

2 seconds of searching finds this:

 

http://www.300zx.co.uk/forums/showthread.php?176327-Wiring-up-a-KPH-to-MPH-converter-how-%28LARGE-PICS%29

Think ill start from the beging as when i took this old one out there was no splicing and only two wires going to the backs of the clocks

The way mine is done is I have take + and - from the back of the clocks. Those are the only 2 wires from the convertor connected to the clocks.

 

The speed signal wire is cut, and has bullet connectors attached. These plug into the other 2 wires form the converter.

well as you can see from the pics the blue wire eventaly from the convertor goes into the yellow wire with the thin blue line on then the yellow wire from the convertor went into the other end of the cut wire that was yellow and had the thin blue wire, the red wire and the green went to the board of the clocks as were they are now. i wired in exactly the same way as is was with the new one, so this surgest that we have two speedo convertors that dont work or its wired up wrong. from this ill asked alan previous owner who converted it and if it ever worked, before ,all the other dials work as normal but it dose affect the steering so next thing to replace would be the censor that plugs into the gearbox then, but i have been told that this was replaced. time to find out sequence of advents me thinks.

Mine only effects the PAS at very low speeds. Sorts itself out once above 3 or 4mph.

got a pm from the previuse owner al , and he says it worked ok brfore it went into bodyshop, prior to that it had one of those speed sensor thingy that plugs into gearbox cas befor awhile back and had some issues, what couls a bodyshop do that just affect your speedo and nout else. i dont supose there a fuse is there. so like al surgested ill have to borrow a uk clock plug her in and go from there,.

Just had a thought thou. Its got to be the thingy that plugs into the gearbox cas the millage isnt going up either

Yes, it could be the actual speed sensor itself, I'm sure these can be tested as well. Do another search...