I can post some photos for you later but, in the meantime, will do my best to explain what I did (sloppy but it works nonetheless).

I followed someone's advice on her and started at the passenger floorwell by removing the carpet trim beneath the glovebox and pulling up the carpet a little bit. You'll see 2, maybe 3, temporary screws by the light beneath the glove that keep the carpet trim in place (remove them). Once you've done that, you'll see a wiring harness behind the carpet; now, to the right of that is a rubber grommer to get through the firewall. I personally made a second hole specifically for the RCA and ground/power wires to go through. Stick the cables through and then pop the hood and look toward the back left where you stuck the wires through (you should see them sticking out, albeit difficult). I found it tricky to reach the cables but eventually found a way. I ended up routing the cables along the top outer frame of the engine, under a little plastic border, which seems to keep it in place.

I'll get some photos soon of how I routed it for your reference. I kind of learned as I went as the web is lacking in a proper tutorial for a front camera install