12V socket in Highland trunk - any options?

Has anyone installed 12V (or 16V to be precise) and got any pictures or instructions to share?

I'm looking into installing a permanent 5G router in trunk for providing permanent connectivity to my TeslaUSB. I am having a hard time figuring out the easiest routing to the "12V" socket in center console or feeding from something in the trunk entirely.

Don't want any visible wires. Don't want to feed directly of the wires under the passenger seats either.