500: Wiring through firewall

[samdavis]

Hi all,

I am a little bit concerned about my power wiring. I have run my power cable between an unused gromet behind the break lines.

Either I have moved and pierced the gromet through the firewall or there are to metal holes (one without gromet, one with).

The power cable is only 12 guage (as included with sub) but I have covered it with silicon tubing all the way past the firewall into the cabin.

Is the silicon tubing enough, or do I need to get a gromet on/ack on this mofo!?

Thanks