Audi A3 L8 98 default speakers connection question

[haplo]

hello,

I am wondering if anyone here can help me. I have just bought a second hand 98 Audi A3 L8, and I am trying to reconnect my default rear speakers and subwoofer. The actual speakers are connected and have wires going from them and everything, i just need an explanation or a diagram or picture that shows me where to plug in the speakers. The previous owner had a subwoofer with a separate amp, after he removed it before selling me the car he did not have time to replug back the original speakers.

Thanks in advance for any help provided.