Hello
i have rx400h 2006 with Mark Levinson radio system and i put "chinese" camera .
switch to the car's own connectors directly, ground, power, and image signal, and its ground, 4 pins,
and working fine.
https://www.aliexpress.com/item/32854188567.html?spm=a2g0s.9042311.0.0.29fd4c4ddBQHt2