1973 Mustang Coupe wiring

I’m new to this so forgive me if I make mistakes. I’m 18 and bought a ‘73 coupe a year ago. I’ve recently gone into the electrical aspect and found that I had power going into my fuse box but no power in the fuse box. I bought a Modern after market Fuse box with the tab plug in fuses. I cannot figure what wires to what. If anyone could help me I would be grateful 

Have you removed the original fuse box?  When you are replacing an original part with an aftermarket unit, particularly with wiring, there is no "right way", although some ways are better than others.  Look for numbers next to the fuses on the old box.  Remove the wires from one side of a fuse and install them on one side of a fuse holder in the new box.  If you are kind to the next guy, keep the fuse/circuit numbering the same.   Then just work your way until there are no wires left on the old fuse box.

You need to go to the Wiki page and download the wiring diagram for your car. 

https://7173mustangs.com/wiki/

And then you need to study this tutorial on how to read wiring diagrams:

https://www.7173mustangs.com/oldmybb/showthread.php?tid=33372&highlight=wiring+diagrams

And then you need to know how to properly wire a car:

https://www.7173mustangs.com/oldmybb/showthread.php?tid=8029

https://www.onallcylinders.com/2013/12/05/wiring-101-basic-tips-tricks-tools-wiring-vehicle/

http://www.mustangandfords.com/how-to/interior-electrical/1812-wiring-tips-and-tricks

Good luck

Hi,

Great to see a young guy working on these cars. 

One thing I recently did while trying to located some bugs is to print the  schematics out and taped them together end to end.  Not perfect , but it might when going from one sheet to another esp. if you are trying to figure out where things are connected or not working.  Just a thought.   Ignore my feet ore my feet!