have just fitted an active duo. comes with a 9v battery lead and a "loom" for wiring into the bike.
spliced it into the number plate light using bullet connectors and so far no problems.
if you need any parts i reccomend
www.chainspeed.co.uk very knowledgeable and fast delivery.
i used the powered ptt loom and keep the autocom, radio mp3 in a tank bag. saves farting around under the seat the whole time.