Ok so I know this is a harness for the engine bay. I am assuming it runs through the firewall and plugs into the computer.
What does it cover in the actual engine bay? I.e. I am wanting to redo all of the harness and wiring throughout my car. So does this include all the wiring in the bay including injectors, headlights, and everything else needed or will I have to buy separate harness kits to plug into this?
This is the harness that covers everything to the engine, however this is a universal harness and will not be the correct length for your Mustang. This would be used if you were putting a 5.0 in a 32 Ford.