Hi Baileyjet,
Here is a link to download a PDF document that is the coax wiring you are looking for. For others, this if for the pre-2008 Bighorns.
The stiles in your cabinets are fastened from the back side. Usually glued and stapled. I have a call into the plant on this and if I get better information, I will add to this reply.
Others here on the forum have replaced their older CRT-style TV sets and may weigh in on this for you.
Later, I will move this thread to the Bighorn - Television forum.
Thanks,
Jim