Many thanks for the kind advice and offer. Have found three others in Caravan Parks over the past three days, all using the same GME unit you mention. So I have had a look at the various ways they install them, one on the side like yours, others hidding under the dash, but all with the mic in the same spot. Just need to find a good deal and installer when we get across to the east coast as its a bit limited in Broome at the moment. Thanks again.