Wiring from roof rack to rear cargo area

[Triplezed3]

G’day, I’ve got a solar panel and a rear light I want to add to my roof rack. Need to run the wiring into the rear cargo area of my D3. Any ideas on a neat way to do this? Pics welcome.

zzz

[DieselLSE]

I ran mine through the blanking plate on the roof, via a weatherproof boating gland.