I ran my 4-ga. through a grommet on the drivers side, underneath the windshield cowl. There's a pic on my webpage. No drilling but I did have to punch through the firewall insulation.

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Louis Wang
Austin (Aug-May)/Sugar Land, TX
1998 Black E0 #3826, lightly modded


-Louis
1998 Black E0 #3826, lightly modded