RPM & Speed Meter Jumps Like Crzy

[payso82]

my rpm & speed meter jumps like crzy sumtimes, wat do need to fix or do?
any1 knows about it?:???:

[Barefoot]

got a bad ground. year make model. if its a honda like 90% of the cars on here you are looking for g401

http://img.photobucket.com/albums/v210/partsforsale/other/57459423.jpg

[D3UC3S]

are you able to rev past 3500???? if not then i would say vss

x2 year make model...need important info to help bruh!

[DarKStaR]

check your ignitor in the dizzy make sure the wires are connected good, had this probelm several times.