Long time since I posted here!!!!
Recently found my Garmin cable that I used to use to power my Garmin Chartplotter at home - and download by Bluechart CD's to the Garmin cards.
I no longer have the RIB or the chartplotter - so if anyone is interested then I have put the cable up on e-bay
Garmin AC/PC Adapter - 7 PIN
Any questions - give me a shout!