You can find this product under BMW 3 Series Audi A7 S7 RS7 LED Reverse Lights (75-077).
Step 1: Pop open the trunk and remove the trunk liner next to the taillight housing.
Step 2: Take a screwdriver and remove the screws holding onto the taillight housing.
Step 3: Pull out the taillight housing so you can gain better access to the reverse light.
Step 4: Unscrew the reverse light housing cover and remove the cover.
Step 5: Pull out the stock reverse light bulb and unplug the adapters.
Step 6: You can see the stock reverse light bulb on the left and the new LED reverse light on the right. The screw-in locations are the same so you can just replace the stock bulb with the new LED reverse light bulb the same way it was removed.
Connect the wires of the LED reverse light back to the stock wires adapters. The wires are non-polar so it does not matter which LED backup light wires are connected to either stock adapter. Then reinstall the new LED reverse light the same way the stock reverse light was removed. Screw in the LED reverse lights into the housing to secure.
Step 7: Put all the wiring of the LED reverse lights into the housing. Then screw in the reverse light housing cap.
Step 8: Screw the taillight housing back on and put back the trunk liner the same way it was removed.
Test to make sure everything works and enjoy your new LED backup reverse lights.