Wire through the firewall?
 

I need to run a small diameter cable through the firewall of my 2017 Acura NSX, preferably on the passenger side. After removing the passenger's undercover, I didn't see any obvious route. The old NSX had a nice grommeted hole, but I don't see that on the new one. Anyone have any experience with this or any suggestions? Thanks!

OK, so I rooted around and couldn't find an easy way through the firewall. I even drilled a pilot hole, but that didn't work out. So my current plan is to take the car to an auto stereo installation shop and have them do it. They took a quick look at the car this morning and said it should be no problem - they're kind of experts at getting wires routed through firewalls. I have an appointment in a week for them to do it and to run the small diameter cable through. We'll see what happens ...

So the stereo installation guy did a terrific job and put the cable through the firewall and routed it nicely. I looked at it carefully, but I still have no idea how he did it. Those guys are magicians.