V70 P1 factory syetem

[sebasteeno]

Bought an ex plod V70 T5 P1 a few weeks ago and its currently got a Sony head unit fitted which will do for now but its only powering two front speakers. By the looks of it the wiring behind has been butchered to try and get other speakers working so i want to rewire it all and try and get the system back up and running properly. Has anyone had the same problem and can offer any advice please? Also i thought the V70 had an Amp somewhere so i was wondering where it is to see if mines even got one?

[abdul]

i think its under the seats