How do I hook up the tach? - General - VWDiesel.net The IDI, TDI, and mTDI source.

• How do I hook up the tach? by spencebm on 18 May, 2008 07:51
• I have come across a tachometer and need to swap it in my car.  I have done some searching and found little about actually running a wire from the W terminal to the tach in the cluster.  What kind of pick up wire should I run and how does it fit into the cluster?  Any help would be great!  Thanks!
• #1 by gigaz2 on 18 May, 2008 08:48
• any kind of insulated wire, its just a signal, no current.
  
  your tachometer is a diesel one right? aftermarket stuff is 99% gas, and they don't work with W signal.
  
  even so you can always improvise an pickup, optical or Hall effect.
• #2 by Vincent Waldon on 18 May, 2008 12:54
• Here's the chart you need to determine what cluster pin goes to the W terminal:
  
  http://www.xjamiex.com/mk2resource/electrical/CE2cluster.html
  
  
  And yeah... it needs to be a diesel tach (only goes to 5.5K).  If it goes to 7K it's a gasser tach and won't work directly... lots and lots of data here and at www.vwdieselparts.com on options.
• #3 by spencebm on 19 May, 2008 06:16
• thanks for the help