R33 Cluster

[Reese69]

guys girls

i have A r33 gtst my speedo was working but when it was working my speed out put to ecu was not working - tried checking this out buggered my needle ( not m point i have a digital race dash) anyway my speedo will not send speed to ecu - someone has told me re solder it on.. easy said but no one can tel me where the connection is - or how to fix this issue - or just as importantly i can not get any type or wiring or diagram of the back of the dash -

can anyone point me to a link or help me out ?