Ahh I’m assuming you have a 10s auto transmission then — that grommet he pulls out is a blank on 10s auto trucks because it’s used on 7MT configs for the primary clutch cylinder to pass through the firewall to get to the clutch pedal. Here’s a photo from my 7MT badlands showing the same grommet, and the larger rubber grommet that’s next to it that I’ve been carefully punching holes through for accessories:Also, to make sure we’re talking about the same grommet, look at this video. This is where I learned about this path.
I could definitely work a 4AWG wire through that large grommet, but the next route for the wire is the one I’m most curious about. I took a long time trying to cleanly snake my ARB hard wires from that grommet into the trim panel that goes from the driver’s left knee area down to the foot sill of the doorframe. If you have a really clean route for super thick 4AWG from grommet to doorframe that would be super helpful to see.
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