1983 ford mustang gt 5.o ing.wireing is tore apart and dont no how to wire it back up

SOURCE: Where is the fuse box in a 1985 Ford Mustang GT convertible

the fuse box is located at the bottom of steering column cover

SOURCE: 1983ford mustang ignitionwiring diagram

http://www.autozone.com/az/cds/en_us/0900823d/80/16/71/3c/0900823d8016713c/repairInfoPages.htm

also if you pick a Chilton or haynes service manual they have complete wiring diagrams...

and a lot more info you will find very useful

SOURCE: 1989 ford mustang power window will not go down

check the pwer switch. if you don't detect any sign of live. then you have to open the door panel to check the motor. most likely the motor or the "T" rail cable is broken.

SOURCE: A diagram of a 2003 Ford Mustang interior fuse box?

Fuse Box Diagram

Circuit Schematic

I trust that these are what you are looking for, they are screen captures of the requested information right from Ford.

SOURCE: refill gear oil in rear differential on 2003 ford mustang gt

The differential will have a plug in the driver's side of the housing that is removed with a 3/8" drive ratchet or square drive. Be sure you know what type of fluid is recommended for your vehicle. It will depend on whether it is a locking differential or standard.