I don’t have a picture but if you look on the top of your firewall on the driver side from the engine compartment, wedged between the fender and the master cylinder, you should see where the main harness runs through. It passes through a rubber grommet. That’s where I ran mine and it works just fine
2001 GT amp wiring through firewall???
I keep looking and looking for all of these grommets that people are talking about to get my power cable through so I can finish setting up my subs. I must be retarded to not be able to figure this out but can you please post pictures?? 
