hi ive fitted a oil press and a oil temp i have a 1998 type ra wrx sti import and i dont know which wire i need on the ecu i got told a yellow one that helpt i know i need the co2 wire is there a diagram or somet plz

 

http://www.jollygreenmonster.com/pinouts.htm

scroll down to your year

B136 pin no:5

 

b136/5 so i tap into that