If you have cheap a wire puller or a long screwdriver or something like that you can push it through from the inside, tape the wire to the puller and give it a lil tug. I have 1/0 awg, 2x 8 awg and a bunch of smaller wires running through that grommet. You should have no problem.
Then if you pull out the glovebox over the steerin wheel you can easily route the wire up and over the steering wheel or to where ever you are mounting it.
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