This I believe is going to be a case by case response, it just depends on what condition your vehicle was left in from the agency who removed all of the equipment. From reading others' posts on here on various things, I feel privileged with condition my truck was in and was restored to before it was sold to me. My harness was already bundled together underneath the dashboard, so when I bought a normal factory console, the harness was already out of the way and then completely hidden from sight. The PPV's actually have a range of different options you could get, so the trucks might look similar outside........but can have several large differences inside. For instance, my PPV had a vinyl rear bench seat (looks leather) and I also have factory installed carpet.
So kind of an open question that no one can really speak on, without some photos and whether or not you know what was installed and removed that still has existing (and useless) wiring. I do know that the PPV harness is different from a civilian truck though, but its just the extent it was left together.