Pulse Side Injector Wire.
 

Can anyone help me to find the <U>pulse side injector wire</U> on my OBD0 88-91 Civic/Crx. I need to install an Injector % Air-Fuel Monitor and the white wire goes hook to the fuel injector control wire (the one that goes to the ECU) or the pulse side injector wire and I don't know which one it is. I connected to the injector resistor box, but it doesn't work. Thanks.