Un-converting a Powermaster swap

Jarlaxle said
The PO swapped my Duster to a Powermaster-I never liked it, and now, it seems to have failed. Question is essentially: is the charging harness separate, or would re-wiring the whole underwood be necessary?

Factory Amp gauge is already gone.

I stand to be corrected here but going back to the original setup shouldn't be that hard.
Here's the setup. Most of the wiring is probably still wrapped up in the harness.