Mirror - Dash Cam Power Connector / Spliter / Adapter

I plan to install one of these splitters/adapter on my mirror connector which will allow me to power my dash cam from the mirror. I am thinking from the USB-A female to use a USB Y splitter and power 2 devices from the mirror, instead one, power my dash cam but also my radar detector. Am I pushing it? Has it been done? Am I going to blow the fuse? And which fuse will that be?

This will allow me to do a very clean install for my dash cam and radar around the review mirror with very nice and clean wiring around it.

Dash Camera Power Adapter | '14 - '21 Tundra
https://trailgridpro.com/products/dash-camera-power-adapter-14-22-tundra

 

I actually just replied to an old thread in the Pro forum (despite having a platinum) for the same topic. I planned on getting the Donger version and would need to tap in RJ11 power, but same Q on overloading things.

https://www.tundras.com/threads/radar-detector-rear-view-mirror-wiring.59290/

 

Looks like your research is much more advanced than mine and is not just a simple plug and play I guess I will just have to trial and error and let you know how I am progressing

 

I use this to power my dash cam. Works great.

Dongar Dashcam Power Adapter...

$33 Dongar Dashcam Power Adapter (12-pin for '15-'23 Toyota Tacoma. Also Compatible with Select Sienna, Honda, and More), Connects to Rearview Mirror, Built-in USB Power Source, Easy to Install

https://www.amazon.com/dp/B07DMW3DML?ref=ppx_pop_mob_ap_share