Best route for Technic harness
So, I'm well into installing some underseat subs and aftermarket amp in my e90 sedan, and I'm wondering if anyone has some words of wisdom regarding the best route to the trunk for technic's harness.
I've searched the forums and DIY's at length, and other than some generic advice re: going under the door trim panels or carpeting, I've yet to see a concensus regarding the best (i.e. easiest and least conspicuous) route from the hu back to the trunk. Any advice would be greatly appreciated.