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Firewall wire pass through - grommet options

ScotsmanSD

Grenadier Owner
Forum Supporter
Local time
2:50 PM
Joined
Sep 21, 2025
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23
Location
San Diego
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.

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