Which one?
Have you considered just buying a new one?
I used to be in the wire harness business. The way we would build a new harness from an existing one would be to take a piece of plywood. Using nails and colored felt pens, we would use the nails and different felt pens to tree out the original. Then copy it onto another one using the original as a template. Then build the new one from what we first built. So you can see it can be time consuming. By doing it this way, you'll ensure you copied the original just like it was. Wire needs to be TS 16949 certified, RoHs compliant,
You'll need good crimping tools. Machine crimping and stripping is far superior to hand crimping since it never creates inconsistentsies in PSI or wire stripping.
