The basslink is soo easy to install... Power, Ground and 2 pairs of wires to the rear speakers, which as far as I know are included. The power wire can be run under the carpeting at the doors, by pulling those door sill plates off, like you were talking about. The power wire will need to be fused at the battery. The sub itself can be screwed to the "board" on the floor of the trunk... just be sure not to use screws that are too long so you dont puncture the spare tire (if its in there).

The amp is turned on by the audio signal when the High level inputs are used, so no remote turn on wire is needed. Which is very nice for newer Honda's and Acura's, which do not have a remote turn on out of the stock head unit.