head unit replacement.

[exosteve]

I want to bin the original head unit and multi changer.
1, It does my head in messing about under the seat to put cds in.
2, All my music is in mp3 format so I want an auxillary input.
3, Ive already go my stereo from my old motor so it wont cost nowt.

The price of the surrounds on ebay are 114 quid
So I want to make one.
Ive figured out which wire is the hazard light block (pictured)
can I put a flick switch straight to this?
And has anyone done it?
Im not sure about which way around these wires may go to a switch.I better get some fuses in I think.
Im also going to fit a few more switches in the new panel ready for my light rail and rear work light.
cheers steve