garners_69

i have a 2000 model and the speedo will work for a while then all of a sudden it will start to fluctuate for a short period then the speedo will not work at all, i have a pfc and avcr fitted and they both show 0 km/h.BACKGROUND INFO: I have swapped out the speedo,tacho,fuel and temp gauges with items from a s6 re-amemiya 310kmh,10000 rpm cluster.all items work perfectly on my previous 99 model until just b4 i crashed it it was starting to have this problem. i fitted the pfc and swapped the gauges out on my new car and the speedo worked fine for 2-3 wks,i just recently fitted the avcr (2 wks ago) and now have these speedo probs. it is an ittermittent fault , when i spliced the wires in the loom for avcr install i did not cut orig wire just stripped insulation and soldered wires on and taped up.
wats wrong ?????????????