On an obd1 ecu harness for my EG which wire is for the O2 sensor.. what im trying to do is i have hondata S200B wit all options including datalogging and i want to hook my wideband to it.. people tell me all i gots to do is hook it to the wire on my o2 but i want to hook it streight to the ecu.. thanks..

 

You can wire a wideband to the ECU it works in a different voltage range than the stocker junk

 

There's a wire pin-out for where everything goes on an OBD-I pinout. It's in the FAQ.