Thanks for the reply. I'm not sure that the plug is a standard antenna plug. I believe the wiring is fibre optic so the plug could be non-standard from what we in North America are used to. If the antenna wiring is fibre optic that would mean that you couldn't splice into it. That's why I'm looking for someone who's seen the wiring and can answer definitively. I'd rather avoid taking the centre stack apart to find out for myself and then leave it torn apart while I order parts and adapters or put it back together awaiting those parts and then dismantle a second time to install. I'm nervous enough at the thought of prying at those expensive parts once!