We're RHD in Australia so things are located differently. I think that plug is still there but not fun to get to.Of you have an automatic this picture shows a plastic area that can come out or drill through. It is on driver side. I drilled and used some caulk after pulling GMRS antenna wire to close gaps.
I removed the passenger side fender for easy access. There is an existing grommet with an additional nipple that is not used. I cut the first few mm of the end of the nipple to open up the hole. It is the perfect size for the aerial cable. I added a little silicon grease to enable the small connector and cable to be pushed through the grommet then secured the grommet to the cable with a small cable tie. Sorry, no photos.Hi,
Do you have few photos to guide, running wires through firewall. Trying to install a gme radio and can’t figure out a grommet.