fuel pump relay wiring shorted somewhere...need help

[mustang_montana]

ok before anyone posts that huge list of "won't start" guidlines, ive already went through it and it doesnt help one bit. heres what happening. the car is an 84 gt vert (2.3 turbo) fuel pump relay is new, pump is working all else is good. i changed all fuse links. car cranks but wont start. on the fuel pump relay plug the yellow wire has power, but the red (going back to inertia switch ) doesnt, however the wire going to the inertia switch also has no power. the inertia switch works 100% but the power wire going to it is shorted somewhere. also there is a brown wire on the fuel pump relay plug that has no power to it with the ignition on/off. what i need to know is where the red wire that goes to a power source and then to the inertia switch connects to, keep in mind i replaced all fuses. i also need to know what that brown wire goes to. please dont tell me to buy a haynes or chilton, i have one and the wiring diagram does not have these wires/colors, yes its the correct diagram. any help as to where the red power wire for the inertia switch and the brown wire going to the pump relay plug start connect to would be appreciated. thanks a lot!

 

[Saleen0679]

Autozone has some diagrams for the 84 turbo. The diagram is incomplete and shows only three of the four circuit paths. The circuit for the brown wire is missing and I'm guessing that it lead back to the ECA somewhere.

 

[mustang_montana]

yeah i was able to figure it out, the two that arent working go to the eec. its in rough shape but im not sure if the eec is the problem, cant figure out anything else so im just gonna try and get one from a junkyard. thing had a little water and rust in it so its possible there was a short in the eec itself.