Received the relay order today. They worked exactly as I expected. Per the 84 TRX200 service manual test process it's a perfect match with my little adapter wiring between it and the main harness. I was going to use the wire provided on them, but found their terminals are not crimped as well as I thought. I actually pulled one of the wires out while removing terminals which shouldn't be possible with a proper crimp. Side benefit of this is that I can color match the wires to the OEM harness.
Anyway, I'll be sending Gabriel the bypass plug and the automotive style relay to test out. I'm 99% sure it's all good to go though.
I added photos soon of the fancy relay. Not sure what the best route will be for mounting them (they are a bit heavy to just leave hanging). Maybe a zip tie to where the tab that the original rubber mount went onto.
Of course the stupid phone doesn't want to take clear photos for me, but not super horrible. Need to get a proper quality camera some day lol.