Hello all
Can anybody tell me how the tachometer on a mk V works?
It sounds like it is cable drive.
Mine does not work....any trouble shooting tips to isolate the actual problem?
Also....any helpful hints on water temp trouble shooting? Am assuming sending unit is electric

 

It is a clock work unit. If it is not working start at the drive and work back to the unit. Most likely a drive cable issue--and easiest to fix!