I believe the Honda chassis harness uses this plug into the seatbelt.
I can only speak for the 18LE I was working on. I would believe other Pioneers are similar.
I used the mating connector for the above picture to build a bypass.
That is what is pictured above.
I would think you are better on a parts fiche then I am. But we could compare driver buckles across the lines to verify part numbers?
Edit: All seat belts are model specific. That won't help.