Gauge Cluster Questions

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Junior Member
I just put a 95 ex cluster into my 92 civic cx, two questions: around 4 - 5,000 rpm the needle on the tach starts to jump around is this a bad sending unit or are stock tachs just inacurate? Also the cruise control light comes on as a shift light, short of removing the bulb can anything be done to stop this, I have the steering column from the ex as well so I plan on putting cruise control in and would like the light to be operational, a link to a site with wiring diagrams would be great. Thanks in advance.
same thing happens to me.....(tach going crazy around 4k - 5k rpms)

i heard someone say that it could be a problem of GROUND wiring... but i dont know! B)

doesnt anyone know?