I WILL need to get an intercom system when we go away this year i want something that will fit on the bike instead of carrying a "black box" round it will also need to be capable of bike to bike is there such a system?
The Starcom (and prob. Autocom - I haven't looked) site has numerous diagrams of the various combos you can fit.
My Starcom lives in a fairing pocket (previous bike it was under the seat) and is wired to the bike's power but only switches 'on' when a headset is connected - so no worries about forgetting to turn it off

It'll run IIRC two headsets, bike-to-bike radio, and music input. The VOX (voice operation) is superb - I never bothered rigging a PTT (push to talk) switch, and compensates for wind noise from stopped up to Humpty-blur mph

As I said, look at the web sites.
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