[bestgenman]

I have 567 which is a 2000 and when replacing the inverter, a cat 5 cable was required.  The cable was dropped through the floor in a closet into the bays below and routed over to the inverter.  The other end went to the remote keypad mounted in the panel that has the temp gauges and switching for aqua hot etc.  The layout of 567 provides a closet adjacent to the galley, it was in this closet the cable penetrated the floor.  The floor is several inches thick but a long drill (called a bell hanger bit) does a fine job. 

Once you open the panel containing the aqua hot controls, you can see a chase up in the corner where the roof meets the side wall.  Newell uses this as a cable chase from front to rear.  So, if you came from the tankage bay up through a closet into the chase, you could get to the front where the TV components are located.  It requires opening the storage compartments over the passenger side and removing a 90 degree panel covering the chase.  it is a tedious task but doable.  

I've run two cat 5's from front to the tv in back so HDMI (using a CAT 5 to HDMI balun) from the CD player could be run  on the TV in the back.  It was a nice weekend job with my sweetie and worth the effort.

Also, you could put a wireless access point in the tankage bay and program your devices to connect to it.

Just a few thoughts......