Ford Repair: 84 GT 350 engine wiring harness, engine wiring harness, complete wiring

Question
The insulation on most of the wires under the hood is starting to crack.  i am wondering if i can buy a new, complete engine wiring harness for my car or if a different year model harness will work?

thank you

Answer
84 GT 350?I am not familiar with this vehicle.Could you elaborate.However,typically you want to stay with the same vehicle when ordering a complete wiring harness.I like to refer to them as Plug and Play.Repairing broken and cracked wires can be problematic at best.I am not aware that mustang made a gt 350 that year,but if this is the case,then you have many options.Year One,or even the Internet will be great places to find what you need.