Wondering if anyone has tried this. It seems as though it would make life much easier and the hole would not have to be very big. Maybe the inside location is inaccessible due to the heating ducts? It seems to me it might be at the top of the footwell. It could be plugged up afterwards. I think the biggest problem would be locating the precise place to drill inside.

Thoughts?

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13