Reversing light cable

Does anyone know what the cable colour is inside the rear of a 2019? I’m fitting some reversing sensors and I need to pickup the live from the reversing light and I’d rather do it inside, it would be far easier if I know which cable and not have to find it.

Thank in advance

On my Gen 3 I found the reversing light wiring by removing the rear panel on the left hand side (as viewed from the rear). According to the drawing I have it was red.

The 2019 is most likely the same.

I don’t know much about this, but isn’t there a plug already provided for connecting reverse sensors behind the rear side trim?
But as I say, I don’t know much about this so I might be talking rubbish.

Thanks

For anyone who may need this information in the future it’s on the left hand side of the car and it’s the brown one as it goes through the rubber grommet to the outside.

Thanks