Welcome to the forum.
My speculation is that Sea Ray also included wire run paths on your boat, like they did on my 2000 380DA.
As an example, on my boat, there is an excellent wire run from the salon stereo to the helm on the starboard side, hidden behind the cabinets.
Mine has similar nice runs from the helm to the engine room and from the engine room to behind the 'fridge, on the port side.
There are also nice port to starboard salon runs and nice salon to master stateroom runs.
All that being said, it is possible to drop / replace the headliner where required.