here is this little device that might be of help for the people who dont want to hardwire, also can connect two devices to it and powers down. I use and have no issues.
https://www.amazon.com/dp/B0D4V57SXX?ref=ppx_yo2ov_dt_b_fed_asin_title
Wanted to show this little device that i used, that powers my dash cam and radar at thew same time, and also powers down, no need to hard wire.
https://www.amazon.com/dp/B0D4V57SXX?ref=ppx_yo2ov_dt_b_fed_asin_title