It was now the end of April, and I finally got confirmation from GOBI that my rack was actually being shipped out within a week or so. So much for the 4 week wait they initially quoted me (numerous times, too!). I knew that the rack would interfere with the satellite radio antenna, so I took the top off the jeep and disassembled the roll cage bits to get to the antenna hidden above and behind the passenger seat before the rack arrived. I had seen a few alternate locations to mount the antenna, but both required either fishing out the full antenna lead line (which sounds like a HUGE many-hour undertaking on a 2016 JKU) or purchasing a new Mopar lead line for about $70. I didn't have time to wait for a new lead line to come, and I wasn't sure I wanted to spend $70 on it anyway, so the plan was just to remove the antenna and figure it out later. Not to mention one of the locations meant drilling a hole through the metal front cowling behind the hood, which wasn't very appealing.
Once I had the antenna taken out, I saw that it had about 8-10 inches of lead line to the connector that attached it to the longer line. I had an idea to see how close that would get me to the back of the radio, so I took apart the console and pulled the radio out. As it turns out, with some delicate finger work I figured out I could fead the lead line through the dash's rubber gasket thingy (?) and around some bracing and have
just enough length to reach the antenna connection on the radio.
here you can see where the skinny black antenna line runs down the inside, under an existing wiring harness, and into the back of the radio.
Once assembled back together, the antenna just sits right next to the daylight sensor out of the way. Reception is not 100%, but I'd say it's pretty close. Close enough for me. I do notice in rare occasions when the Sirius connection will be momentarily dropped for a second and then reconnect, and that only usually happens when i'm driving next to a steep canyon wall or tall building.
Here's a close up shot of the antenna where it sits currently. It blocks a small portion of the vent, and it could be mounted more securely and more flush. I'm assuming i'm not going to leave it here forever, so I opted to leave it in this less-permanent state for now.