Wiring route

[vRSG60]

What’s stopping my cables from going from the tailgate grommet to the hinge grommet on the RHS?
I’m trying to ad solar cable and wanted to run it across from one side to the other inside body work but it stops half way. I have Barn Doors

 

[Matt-T68]

They are a pain in the arse to get through. I had an issue when i fotted my rear dashcam. I used an electricians draw wire as its a lot stiffer and easier to get through. Attached the cables and pulled them through.

 

[Drive Wayne]

What’s stopping my cables from going from the tailgate grommet to the hinge grommet on the RHS?
I’m trying to ad solar cable and wanted to run it across from one side to the other inside body work but it stops half way. I have Barn Doors

I've got the same job planned for tomorrow, feeding a couple of 12v LED light strings power wires through that barn door grommet into somewhere near the base of the wardrobe to get power from the Cerbo relays, while I'm in the wardrobe I'll be getting the solar cables ready for my new Renogy 220 watt suitcase solar.
I've just ordered a top quality 'cable retraction aid' from the Amazon for £4.99, delivery tomorrow.