where to run power wire through firewall?

the grommit is somewhere down in this area.   remember that it's at the very bottom of the firewall, you'll miss it if you're not paying attention.  but it's seriously just an empty square down there.

okay, so sorry for any confusiion but on the engine side of the grommit there is like a pyramid like grommit.  if you shove the wire in from the cab, you will end up in this grommit.   i just cut and sealed it.  i found it easiest to work on the grommit from the engine side by taking off the passenger side wheel.

i hope i wasable to help someone out.