vss input power?

I don't even know what he's asking, but you don't need to tear apart a USB device just to get a 5v regulator. You can just buy them

I thought a T56 is a 5 speed? What do you need a speed sensor for? And what is a bowler harness?

7805 datasheet

https://www.mouser.com/datasheet/2/149/LM7805-1010961.pdf