And now, in another exciting episode of "Nobody Cares Pablo!" we bring you the latest updates!
First, I did find a 90980-11503, from a dealer in Florida (more on that later). I placed an order, and the connector actually showed up. And, it actually fit with 90980-11502!
So then I thought it was time to get real and pull the radio and see if these connectors were worth the effort.
They were. The 11502 (F) fit right into the back of the Nakamichi stereo. The 11503 (M) fit right into the LX-470 wiring harness.
Victory! Well, not quite there yet, but close. Just need to mate my wires up with the Pioneer harness, and then plug right in.
Pictures later...