HP to HK Sound: Door Wires

[spacemanspiff]

Ok the HK AUD I'm looking at is from an XC60. So I won't need to run a new wire to the rear doors? Instead I need to get an XC60 door/trim harness that will connect all three speakers in parallel? That's a plus. But also weird that Volvo did it that way. 

Do you know if the HK AUD sends a full signal on the door channels, or is there an internal crossover? I noticed that all the speakers except the woofers have capacitors.