Went to install the planned grommet but I hadn't realized the extra width of the groove would cause them to be as loose as they were installed.
So I went with the next set in the grommet kit that were for the same size hole diameter.
Creates a bigger hole for the wiring which is nice to fit more wires. But I may need to plug it up some if the wires don't fill the hole to avoid a spot for water intrusion.
I'm not so worried about water intrusion, give the placement on the firewall being pretty high and the battery tray providing a natural splash shield. If I see a issue, I can add more tape to the loom in the engine bay and pull that into the grommet to better fill it.
Final install.
So I went with the next set in the grommet kit that were for the same size hole diameter.
Creates a bigger hole for the wiring which is nice to fit more wires. But I may need to plug it up some if the wires don't fill the hole to avoid a spot for water intrusion.
I'm not so worried about water intrusion, give the placement on the firewall being pretty high and the battery tray providing a natural splash shield. If I see a issue, I can add more tape to the loom in the engine bay and pull that into the grommet to better fill it.
Final install.