GRJ,
I ordered the pin headers from your links. More than I will ever need. Anyway, If I understand this right. The female header pin wire will be attached to antenna rail on locomotive. The male header pin wire will be attached to center rail pickup on the tender.
This will help the signal on both the tethered & wireless tethered engines.
I also bought 22 ohm 1/2 watt resisters. I hope that was correct.