This is a quick tutorial on how to upgrade rear/tail lights for Volvo XC90s to LED lights, so you can go from this:

to this:

You will need:

- LED lamps :)
- your car must be MY2006 and above
- the latest REM software
- CEM configuration with VDASH:

Lastly, you will need to reconnect the wires exactly as shown in this diagram.