opposite lock

iTrader: (3)

Does anyone know what colour wires go where , its the first time i,ve looked in nye on 6 yrs, about time i should fit a stereo or at least try lol . If i,m unsure then i wont bother but i did one years back and that was ok ,

I have a
thick brown wire
thick yellow
thin red
thin brown
thin grey/white
red/white
I also have 8 wires for speakers and possibly an old speaker module thingy which i dont have

any help is much appreciated

thanks
Mike