Firewall wire pass through - grommet options

[ScotsmanSD]

I have reviewed the various posts on this topic & still can’t find a suitable location to get a Midland MXT275 radio antenna cable through the firewall. The connector is about 3/8” (10mm) in diameter.

I have a US 2025 model Trialmaster with safari windows, front winch, high load aux switching etc. so all the grommet locations in the footwells are used. See pics :

Can I make slit in one of the existing grommets (the large wire loom soft grommets would be easiest I think) then seal with silicone) or are there any other available spots ?

Appreciate any help.

 

[Gxgn]

I would avoid cutting the grommet but it’s just my preference. There are other options if you want - you can run it through the floor through one of the water drains or through the ceiling and through one of the DTP exits at the top - that’s how I did mine.