Where to tap for Tach signal on 96 240sx?

[ecugrad]

Can anyone help here? I have poked, prodded and cant find ANYTHING that gives me a tach signal on my 96 240sx

Thanks!!

[ITS 300zx]

At the ecu

3- yellow/red- tach

taken from

http://forums.freshalloy.com/showthread.php?t=96309&highlight=ka+ecu+pinout

RDM II is a KA god on the forums. Make sure you check the wire with your digital mulitmeter.

-set the meter to ac current
-probe the wire with the positive lead
-ground the negative lead
-turn on the car and rev the motor to see a change in ac voltage

that's it.