Don't think you'll find a Toyota part number for one connector on a huge harness. Maybe available somewhere on this maze of a website >
hi-1000ec.com - https://www.hi-1000ec.com/
If you're after the 24v H4 switch... I ordered 84722-60060 recently. Looks right and shiny. Haven't swapped my dual switch (Hub Lock/H4) out for it yet though.
Actually you can as long as it has a 5 digit number on it (and it’s still being manufactured).
This connector does not have a number ergo it is not available from Toyota as a service part.
Its a Yazaki connector.