No clue which audio cable's which?

Hi, I just got a "Pioneer DEH-1100MP" - http://www.caraudiocentre.co.uk/product_m-pioneer-deh-1100mp_p-23620.htm - I am trying to install it into a 2000 Nissan Micra K11. Upon trying to install it I came across 2 problems;

1) My Micra does not have what I class as a "regular" place for its head unit, the head unit is kept in place with the use of mounting brackets instead of the normal flush fit I'm used to seeing. Could you point me in the direction of a tailored mounting bracket as the one that was on the stock head unit only allows me to use one screw.

2) In order to fit the adaptor that I need to be able to plug my speakers/power etc. into my head unit, I need to know what the various wires are by colour, I cannot seem to find a guide anywhere.