muddmadness

I am trying to find out the proper wiring for the injector time switch. I am new at reading wiring schematics so bear with me. There are two wires that come from the switch a green one that goes to the ECM and a black one. On the schematic it appears that the black wire goes back into the green wire. My question is: is the black a ground or does it mean that it is a closed circuit? Reason being that I found the black one just hanging loose under my EFI intake and it looked as if it was twisted and jammed in somewhere. I just replaced the switch and don't want to burn it out because of bad wiring job???

I accidently posted this in newbie section, it should have been here..oops.