Switch on tailgate brake lights on boot open for safety

Inspired by the post of Cubic007mk here: www.drive2.ru/l/6230648/ I made some changes and implemented the following effect:

I think that is a small safety measure when you open the tailgate in the dark. I modified the light source (outer brake lights instead of turn lights) because the boot can be open for many seconds and didn't want the turn lights to be shining for such a long time as they are made to blink.
The inside rear brake lights do not have to be coded because the will just shine above your head to the sky.

Coding is as follows:

1. Click [09-CENT. ELECT.]
2. Click [SECURITY ACCESS-16]
3. Enter code: 31347
4. Click [ADAPTATION-10]

For rear outer left red brake light:
5. Find channel (5)-Leuchte20BR LA71-Lichtfunktion B 20
6. Change value from “not active” to “Heckdeckel offen”

For rear outer right red brake light:
7. Find channel (5)-Leuchte21BR RC8-Lichtfunktion B 21
8. Change value from “not active” to “Heckdeckel offen”

Enjoy and I hope you like it