If you are pointing the IR remotes at the tvs, you are right that you don't need IR buds for them. I have IR buds located near each tvs and they have wires that send the signal back to the satellite receiver and DVD so that they get the remote control signals as well. That way I can always point my remote at the tv, even though the channel change function is really being done at the receiver (located in mid coach on mine).
Where are your IR bud receivers? I would think the three cables you mentioned are bring signals from the tvs rather than to them.
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL