what wires go to which injectors on an s5 turbo II? i have all stock. wondering which injectors are powered by the harness coming from the cas and emissions? and which come directly out of the main harness? two have tape on them and two have not.

 

You're probably gonna want the 1991 Wiring Diagram on this site

 

I'm not fully unerstanding your question, but all 4 injectors plug into the engine or "right side" harness that goes directly to the ECU. Are you asking which plugs on that harness go to which injector?