VN Firewall and AMP Power Lead - Penatrate the firewall - No Room! I bought some heavy gauge power cable - I intent to connect directly too my battery (+) --> then run it under carpets to my Amplifiers in the boot.. The problem I have come accross is the existing gromets in the firewall are too full to put the cable through them, I could drill a new hole in the fire wall and put in a gromet but I dont know where I should do it? If I use a power drill in the firewall should I completly disconnect the battery completely or just the Negative? And what side would I drill (Battery/Drivers) or (Passanger/Computer)? Any tips would be great.. Cheers Lee.