To clarify, are you trying to route a cable from the front bumper to the center console?
The easiest way is to route the cables through the firewall rubber grommets. You will need to go through three firewalls. First remove the bumper (you may be able to avoid this if you can reach down through the small opening below the headlight when it is removed, but that would be a very tight fit), then remove the plastic screw/caps that hold the passenger/left side of the front trunk carpet in. Pull the carpet back and look for a rubber grommet, that is the first one.
Route the cables under the front trunk carpet to where the factory CD change would be installed. You will find another grommet there to exit the front trunk and enter the cowl area with the battery. The last grommet is on the driver side/right, low and behind the battery. This grommet will exit into the upper driver's footwell, and from there you can route the cables to the center console. This grommet is covered by insulation inside the car, so you will have to make a small tear in the insulation. Push a small screwdriver through to help you find where the cable will exit inside the car.
Make a tint x shaped incision in the grommets to push the cables through, and I would recommend putting some sealant around the cuts when you finish to ensure everything stays water tight. Best of luck!
