I have had 3 JKs and have never had an issue feeding wire through the firewall until my 2015. I have a 6 speed tranny so the hold for the clutch is consumed. All other passages through the firewall are plastic and seem to not be simple to pierce and send an extra cable through. Anyone have this issue and solved it? Please don't reply if you have a pre 2015 or an auto as I know where the holes should be for those JKs. It seems in 2015 they switched to these plastic fittings over rubber.