As smakdown said, that's how you get the wires through the firewall to the interior of your car. It isn't that hard.

Honestly, the rear isn't very hard either. You take your wire, which is already around your fuse box area. You pull off your sideskirt cover panel and send the wires along there to the plastic part around the seats. From there, you can stuff the wires with a wire stripper under the panel. Put your hand on the bottom part of your seat and pull up hard. The plastic connectors of the seat will connect or disconnect by simple pulling/pushing. You can then put the wires under your seat and around where the fold down part pivots. There, it is velcroed and you just either lift that up, or if you need it the rest are all plastic grommets. It's really simple - it's a honda. Good luck.

oh yeah, and please, dont tap it into your radio. It's not a good idea for many reasons...