Ford Ka Parcel Shelf Speaker Fitting. Anyone know how?

Hi I want to put some small speakers in the parcel shelf of my ka (maybe 10cm) but I havent got a clue how to wire them up or anything. can anyone help me, wiring diagrams, websites that may be helpfull? anything really, because I haven't got a clue.

Also I have just bought a set of door speakers for my girlfriends Ka because the one on the left was popping and the one one on the right didn't work. I have fitted the new speakers, the one on the left works perfectly but the right one doesn't work at all. I now think that it may be the wiring and not the speaker, can anyone help with any advise or solutions?

My e-mail address is [email protected] ([email protected]) and any help or advise would be extremely helpful.

Thanks