HELP replacing rear speakers 89tq

["Robert D. Russell" <ameco@wormhole.map.com>]

        89 200 tq,with stock audi radio and speakers(no bose). Went into the
trunk to see how easy it would be to up-grade my current speaks. only to
find about 10 wires attached to each speak.    NOT like the simple 2 wire
system found in my 84 5k.  

        QUESTION What the hell are all these wires and does anyone reccomend
a replacement.

thanks,

bob russell