Subwoofer install

[Sshirley1254]

I am installing a subwoofer on my Buick Lacrosse 2007. Where is the rubber gromment that goes through the firewall? Has anyone else installed a subwoofer in there car?

 

[douger]

I am installing a subwoofer on my Buick Lacrosse 2007. Where is the rubber gromment that goes through the firewall? Has anyone else installed a subwoofer in there car?

Slightly to the right of center under the HVAC case.