Yeah there is two different pass throughs on the firewall. One on the driver side and one on the passenger side. I went through the passenger side one. Was able to run my antenna cable and Auxbeam control panel wire through that same pass through. On the pass through you will see what looks like a little nub, or finger that sticks out. I simply cut a slice on the tip of that finger and with a little grease and coat hunger wire i was easily able to get them through. Below is a picture of the gromit in the engine bay one on the passanger side and one on the drivers side. .
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Here is inside the passenger compartment.
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