yamaha fazer fzs 600 2003 Rev counter not working

[neilr]

If a TPS fails it will NOT stop the rev counter working end of.  If you disconnect the TPS the rev counter will still work fine, if the TPS is faulty and connected it will register on the rev counter by making the needle bounce and then go back to normal operation.

Neilr your rev counter stopped working, the TPS route is a blind alley as is the advice not to buy TPS's off ebay, ignore it.  If you buy cheap or second hand no matter where's it's bought you run the risk of it failing, it's not an ebay issue, it's a buyer issue .   

Thanks everyone, finally found the fault as you told me it was not the TPS. Found a loose/dirty connection in a plug located behind the left hand side panel(black) cleaned up and hey presto! working Rev counter.