how to install grommet/alternatives at firewall after running the cable?

[nobitanobi]

4 gauge amp power through a hole (more oval than circle) i drilled on the driver side firewall, i can't make the hole any bigger because the drill bit just wont stay still on the sheet metal while angled. i was thinking about just glue the hole shut so the 4 gauge wont be grinding on the sheet metal. anything else easy and dependable i can do ? thanks

[frankierx]

Yes, under above the gas pedal is a rubber gromet that you can cut a hole into and fit your 4 gauge wire. I did it but never used it completely to install my amplifiers. I ended up taping the hole back up with electrical tape because I opted out of the amplifier set up.

[toyota_b]

Thats what i did i put 1/0 through mine... I have done the same thing on a few of my installs on diffrent cars. never had a problem either. Thats what i would say could be your best bet. you could get some rubber plugs and put that in there if need be or just elct. tape it.