Amp install with aftermarket stereo

[AceWynn]

Hey guys,

I have an aftermarket stereo and I'm planning on installing my subs this weekend. I do have a several questions that I haven't been able to find the answer to. First off, what I have is 2002 BMW x5 3.0. It doesn't have the factory amp or sub.

My first question is should I connect the remote and RCA wires from my deck to my amp? Or should I tap into wires that already exist in the trunk? A couple of installs I read about, tapped into the ignition wire for the remote and they use pre-existing wires to tap in for the RCA wires. But I think the sound wouldn't be as clean.

If I run the wires from my deck to my amp, should I run the wires down the driver side? Passenger side? Down the middle under the carpet?

Any tips would help greatly. Thanks guys!