BTW, and this is YMMV, but very dirty harnesses/connectors will clean up nicely with a spray of Simple Green and a towel. Those harnesses likely can be made to look almost like new.
Most look intact, but for any random cut wire, just splice in a similar color and heatshrink the connection and you should have a 100% accurate and 99% original harness for your game.
Also double check the edge connector pins and Molex pins ... also easy to replace, if necessary. Overall, likely a good and wise purchase.