GC680 Additional Solar - cable routing question

[IsThisNameLongEnough]

Good morning all

What's the easiest path to run a cable from the roof to the electrical cupboard?


Background:
We have a GC680 with factory 170(?)W solar panel, but have also fitted a Ecoflow Delta 2. Not happy w the performance of the Ecoflow Alternator charger (very manual step to connect and start every time we go for a drive), and wanting to keep the Ecoflow powered coffees going while parked for a while - wanting to put some additional solar panels on the roof.

Currently have 3x60w flexible panels mounted (2 at front as per the gc600 location, and 1 above the sink, all wired through into behind the lining above the rear bench seat.

Now struggling to find a route to get the cables down to the Delta 2 in the Electrical cupboard, contemplating drilling a hole in the back of the wardrobe to drop down there, but sure there must be an easier path.

Fish tape can't get past the 'step' where the fibreglass top joins the steel body.

Any suggestions as to do this?

 

[Hammer]

i have run my starlink cable from the rear roof window through the corner cabinet as there is a gap on top where LED strips are and then behind the fabric lining. you’re cables might be bit large for this route but still could be option.

 

[IsThisNameLongEnough]