Running multiple cigarette lighter devices in 130i

[gofaster 101]

Has anyone fitted a multi-port cigarette lighter splitter in order to run multiple devices?

My 130i has the lighter under the centre armrest.

Pain in the butt to run any lead from the dash to there.

Want to run a permanent dash cam (with lighter plug), and radar detector on trips.

Thinking of running an extension from under armrest to passenger foot well which will connect to multi port lighter splitter.

What have others done?

Cheers, John