Installing new audio system this weekend. Trying to figure out best way to get wiring from head unit to area under rear seats. I have removed my rear seats and installed a rear seat delete. Am going to put the amps under the rear seat delete. Have built a custom sub enclosure to go in the former boot area. Trying to plan how to pull the wires. Is there a track along the door sills? or should I go along the tunnel? Would like to avoid drilling a bunch of holes in metal. Help please!

 

There are wiring channels along the inside of the door sills that have plenty of room for wiring. Remove the kickpanel/doorsill interior piece to access it. If you are removing the left side, there is apushpin near the fuse box opening that has to be removed first, then the panel removes by pulling it off towards the center of the car. Remove the seat belt anchor on the floor for more clearance.