I sent Shawn at Third Coast Pinball some pics of my factory harness to show how some of the connectors were wired up and he sent me a prototype harness he built that was plug-n-play. It is quality workmanship. All of the connector pins are those better quality trifurcation pins which are so much better than the single-surface pins the factory used.
I do not think you will be disappointed when your harness arrives.
In case anyone would like to see the back box harness installed I took a few pics of the prototype harness Third Coast Pinball sent to me for tryout. These pics show the harness installed in my Dragonfist since it and Stargazer use the same player displays and credit display layout.
This pic is showing the two connectors that attach to the MPU plus one of the connectors that plugs into the sound board. I use the Alltek MPU which has a different profile than the factory MPU-200 board. The wire bundle that plugs into the upper connector on the MPU is too short to work with the Stern factory MPU-200. This short condition will be corrected on the production harness that you will be getting. All of the connectors have been labeled so you don't have to scratch your head trying to figure out what plugs into where.
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Next up is the back box connector where the displays harness connects to some wiring that will lead to other places.
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This is the harness where it attaches to the displays. There is some excess wire between Player #1 and Player #3 that I have bundled up with tie wraps to take up some slack. This excess wire has been addressed and will not be present in the production harness.
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All connectors are labeled for easy identification.
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And here is the other end of the harness located at the rectifier board and speaker connector. There is plenty of wire length in the harness do all you need to do.
EDIT: I forgot to add this: If you have one of these Classic Stern pinballs that you preparing to move and you have to remove the back box to make the move, you are going to need unplug all of your wiring so you can remove the back box. If you will disconnect the J-3 connector at the rectifier board and the connector at the speaker and roll this wire bundle up and feed it up into the back box you do not need to remove the wire harness from the displays.
I did not know this when I bought my first Classic Stern and went to the trouble of disconnecting ALL of the wiring from the circuit boards and all of the wiring from the display connectors and dropping it all into the cabinet. Others have done worse and cut all of the wiring that went to the displays and pretty much ruined the displays harness. You don't have to do all of that work or create any destruction to remove a Stern back box.
I'll say it another way for clarity. If you need to remove a Classic Stern back box for transport, or any other reason, first disconnect all connectors from the circuit boards and let them drop into the cab. Then disconnect the J-3 connector at the rectifier board and the speaker connector and roll this bundle up and into the back box and it will travel and make the trip inside the back box.
EDIT #2: Do not remove the wire connectors from the SDU board. The bundle that goes to the SDU are part of the displays harness. My apologies.
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