rpm signal?

[180sx]

guys im helping my buddy with ka24et put in my blitz sbc id boost controller it requires me to tap into rpm feed for some functions to work. I tried looking but can't find anything...Can anyone tell me where it needs to be tapped like which ecu pin# and wire colour. I am trying to dl fsm but can't get a pinout.

[zerepdivad]

it's a yellow/red wire on the ecu plug. That's where i got my tach signal for my remote start system. Otherwise i'm pretty sure you can get it at the ignition coil also.

[Chezedik]

You use the white wire on the transistor.