A friend I am helping with a '92 F-150 with the 302 V8 has a problem with #2 injector not firing. He already had me clean and flow the injectos on my ASNU bench, and I know they work. He replaced them all with some from RockAuto thinking my bench was not doing its job, but the issue is still there.

Given that the injectors fire in a bank-to-bank fashion, I suspect the wiring. Does the ECM have 8 injector drivers, or two? I am trying to decide of bridging the wiring in the harness could aleviate the issue, or if the problem lies back in the ECM.