Radar sensor harness

Today, I called Toyota dealer to see if I can find a connector to the front radar sensor. They told me that this can be ordered as a part of a whole engine harness and it will cost me $3000.
I can use the existing plug but i can not locate each wire by colors because they all disconnected entirely.
My question, does anyone have a diagram or picture to help me to connect these wires to the plug?
Prius Four 2017 with pre- collision sensors
I think all Prius 4 with bumper sensors from 2017 to 2020 have same engine harness.