Guess What?!
I just came in to look for an answer to the same question. I've routed the tubing in to the car and now find that it appears I have to butcher the original "A" pillar trim piece for the gauge pod to work! That makes no sense. When I ordered the "A" pillar gauge pod I assumed that it was exactly like the original but with "pods" for the gauges. I really don't feel like cutting up the original trim piece and don't want to wait to order another one online.
A bit of frustration venting there. I kind of feel better so I guess I'll go back and give it another shot. There has to be a way of pulling this off.