I Need To Find A Tach Signal

[p.tony]

My tachometer is busted and im trying to find out if i can pick up a tach signal from the fuse box and if so which plug to run a standalone tach. Or anywhere else for that matter. Hooked it up to vag and the rpms are off, i.e. showing 6000 @4100 actual. They vary at different rpms. Any leads are appreciated. Thanks

[anaxagoras]

You can pick up a digital tach signal in the wiring harness behind the instrument cluster.

There was a post on AudiWorld a while back about somebody finding an analog tach signal for the purpsoe of a remote starter. it was in the sheath of wires going to the ecu.

Hope that helps a bit.

[p.tony]

hopefully thanks

[EuroFreak]

Did you ever find the correct wire? I'm looking to install a shift chime/buzzer and I also need the tach signal for this.

[bigern45]

i just went through this trying to hook up a zeitronix on my setup...right at the ECU harness.. green blue wire at pin number 37 i do believe....