Does any one out there know which pin out on an STI 7 ECU would give a reading to the Tachometer. I need this in order to install the "auto-start" on a Viper Alarm.

Thanks in advance

 

Any one.....PLEASE

 

Rather than probing the ECU I took mine from the dash.
It came out in seconds, cant remember the colour (Sorry) but used a multimeter to find it.
I actually needed the speed wire but it was on same plug as the tach.

 

Thanks mccltd,

I found it on the dash plug into the tach with a multimeter