Good News! Eugene Kaspin of VAIS Technology (vaistech.com) responded to my request for a custom Toyota/Lexus "square" satellite antenna connector cable (Female to Male). He quoted me $80 + 10 shipping with a 2 day turn-around time. Of course, I said LETS DO IT!
So, just wanted to pass this info on for anyone else needing a custom cable solution. Here's his contact info:
I'm looking for the cable(s) that connect an OEM satellite (XM) antenna to the back of an 09+ JBL radio w/built-in XM tuner.
There are actually 2 cables: one that runs from the headliner (where it's connected to the roof-mounted antenna) to the left kick panel and another that runs from the left kick panel to the back of the JBL radio (blue connector).
Also, if anyone has a "XM Fit Kit" (for non-JBL radios) I would be interested in the antenna cable provided as well.
The 1st pic depicts the "blue" connector on the back of the radio (Female).
The 2nd pic (w/Quarter) is the connector on the OEM XM antenna (Male).
So, a reasonably long (9'-12') Male-Female cable would do the trick!