Can anyone suggest a route so I can mount a Marinco 120V inlet at my hitch?

I would like the cable to enter over on teh passenger side. That is where the fridge is.

I can't seem to find a clear shot. I see a about a 1.5" rubber plug that fits to square tube. I have the JBL system also and it's hard to see what's possible down there.

I didn't remove teh tail light to see if it reveals anything.

I have some varied sized waterproof gland nuts but again I can't tell if I drill through will I end up indie a piece of square tubing.

There is a 1.5" or so plug inside teh cargo area that is a few inches to right of the hard plastic piece that connects across the two sides ( where the cargo door shuts on. ) It got too dark for to work any longer.

Anyway... does anyone know a spot where I could drill thorugh, insert a waterproff fitting and be able to get the nut on it from the other side. I've also got a fuse box over on the right just rearward of the factory 120v outlet under that access panel. So that area is kinda tied up too.

I'm trying to figure how to make myself some sort of jig like a giant caliper that can measure inside the cargo ane under the spare tire area so I know what places align.