Running Wire

I found the hole in the firewall on the inside of the car but cant find it under the hood, is it behind something or am i just that blind. And it looks like there is this cover over the wires on the iside which makes it really hard to run the wires through it, is it removeable?

one...are you running the wire on the passenger side of the car or the driver side of the car...
two...if you are running it on the passenger side don't do it...bad things happen to the computer...

i had to run mine through the gromet in the front door ......but have fun anyway