Thanks.

Unfortunately the "manual" for the headunit is sparce to say the least. The installation guide says "plug in the connector". I guess you get what you pay for. It looks pretty though.

Amp should be more than powerful enough - it's one of these:

http://www.caraudiodirect.co.uk/product_...42aa1a5d26f0b27
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Mk2a RioCar 120Gb - now sold to the owner of my old car
Rio Karma - now on ebay...