Thanks for the photos, documentation, and showing the way!
Please clarify 2 things:
You said: "I just added a bit of solder to the resistors on the board, then reheated it with the iron and attached the wire. " Does that mean you attached the wire to ONE END of each resistor? I ASSUME it didn't matter which end?
It looks like you put a jumper on the header and soldered to both prongs, is that correct?