I have a 2001 Tahoe with one run of zero already, but I don't think another run of zero will fit through the hole. Do I need to make the hole bigger or drill a new hole?
I have a 2001 Tahoe with one run of zero already, but I don't think another run of zero will fit through the hole. Do I need to make the hole bigger or drill a new hole?
Find a spot where it's clear on both sides to drill in the firewall. I use step bits with an impact driver. Just silicone them or seal them off and use grommets, don't let the wire jacket sit on that raw metal.