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 didnt see the black wire in the schematics but this should help

 

Comparing those schematic to mine, The STJ wire is green.
The STA wire is black for MT and Yellow for Auto trans.

 

Totally makes sense, thank you so much for your help. Maybe now she will start and run right again. shoooo...this wiring thing is wearing me out. I think I will change her name from Tuesday to Frankenyota...lol. Tuesday has a manual transmission too, glad I didn't touch it might have had a wire fire...not good. The schematic I have did not specify that the black wire goes to the ignition only back to the STJ wire. Now I just have to track it back to the ignition and injector to put it back where it belongs

 

Since you are tracking it back, The same black wire from the ST1 to STA splits off to the starter and the Open Circuit Relay.

 

I have to track it down to reconnect it, the wire going to ignition was just hanging under the EFI intake. When I found it I just stared at it for a few scared of it...lol. I have spent some time fixing some seriously ghetto wiring issues since purchasing the truck. I can honestly say it would have been easier to build it myself. Good education though, I will build the next one with confidence

 

So it looks like I need to figure out which side of the switch is stj and which is sta, then I can make sure its wired right then track down the wiring for ignition and reconnect properly

 

Mystery solved, black STA wire not connected to starter. That should solve the injector and time switch issue

 

Glad to hear you found it. Always nice when someone post they got it fixed.