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<blockquote data-quote="DarkKnightSM" data-source="post: 8575340" data-attributes="member: 672612">Consider this! Most factory grommet locations are already crammed tight. But rubber stretches! So if your 1/0 guage seems like its not fitting, take a smaller guage wire, wd40 that wire, atleast the part that initially goes into the grommet or rubber part, and start feeding it through, till you have enough to grab on the other side. Then with enough wire still left on the engine bay side, take the 1/0 guage wite and attach it to the smaller guage wire, id use wd40 on the initial part of the 1/0 that will be entering the firewall, then after enough gets theough it should slide back and forth relatively easy.My only thing is, on newer cars i hate pulling up trim peices, sometimes the rivets can be somewhat difficult to locate and you can end up breaking them. Making the reinstallation look a tad loose, it might be better to just heed the advise of others and go under. Whatever you do, run wire loom. Make sure that wire is fully protectedOh and for the purposes of attaching wire together, duct tape it BEFORE you wd 40 it otherwize it obviously wont hold</blockquote>

[QUOTE="DarkKnightSM, post: 8575340, member: 672612"] Consider this! Most factory grommet locations are already crammed tight. But rubber stretches! So if your 1/0 guage seems like its not fitting, take a smaller guage wire, wd40 that wire, atleast the part that initially goes into the grommet or rubber part, and start feeding it through, till you have enough to grab on the other side. Then with enough wire still left on the engine bay side, take the 1/0 guage wite and attach it to the smaller guage wire, id use wd40 on the initial part of the 1/0 that will be entering the firewall, then after enough gets theough it should slide back and forth relatively easy. My only thing is, on newer cars i hate pulling up trim peices, sometimes the rivets can be somewhat difficult to locate and you can end up breaking them. Making the reinstallation look a tad loose, it might be better to just heed the advise of others and go under. Whatever you do, run wire loom. Make sure that wire is fully protected Oh and for the purposes of attaching wire together, duct tape it BEFORE you wd 40 it otherwize it obviously wont hold [/QUOTE]

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