there's no easy way. I ran them under the back seat, to the door sill trim, under that to the kick panel and through the wiring boot into the door. Most difficult part in my experience is pulling it through the wiring boot. A wire hanger or other piece of stiff wire works well.
Probably takes a good hr per side if you haven't done it before, depending on how easy/difficult it is to loosen/remove parts/panels that need it.
yeah definatly having a hard time getting the speaker wire from the car into the door pannel, im trying to go threw the little hose thing that wires are already running threw but having trouble with that, any other ideas on how to do that?
that's where the clothes hanger or other stiff wire comes in handy. Cut a piece a piece around 18" and bend a small loop at one end Thread it from the door through the boot so you can hook the wire through the loop then pull it back through the door. It can still be a pain, but that's the most effective way I know of.
Actually there is plenty of electronic theory that disputes the power/signal noise myth, but there are enough installers that still swear by it that the myth will live on.