something is wrong with my speedometer, it dont work, but it'll shoot up and goes right back down sometimes between shifts..anyone might know what's wrong? someone had told me it's the wiring, but i dont even know where to start..somebody help..thanks
P.S. i just brought a new cluster, so i'm sure nothing is wrong with the gauge cluster

 

First you can try to take out your actual cluster and find in the back some loose conections or something wrong in the back wiring. How the problem starts?

 

well, i've already looked behide the cluster(since i changed a new one), everything looks fine from my point of view, what way/s can i check the wiring?..i brought the car like that.

 

what car are you working on?

VSS sending unit on the tranny will be my early GUESS.