I bet this has come up before but i cannot find a current thread for it.

I have a Mk2 Mondeo 2000 model and fitted a JVC head unit and want to fit a Sub and Amp now and need to know how to run the power cable for the Amp from the battery through to the rear, i can see a grommet on the passenger side bulkhead in the engine bay but the cables are SOOOOO tight in it that i cannot even get a slim screwdriver in there.

I looked from behind the glovebox but cant see the grommet from the inside because a fuse box is in the way.
Any ideas or advice would be most welcome pleaseeeeeeeeeee ;-)