Following a few attempts with various load resistors and configurations in the past, a solution was found. All the materials you need are 2x 50W6Ω and 2x 50W7Ω load resistors with aluminium housings.
Each positive cable has to be connected to a load resistor, while the other end of each resistor has to be connected to chassis ground. The load resistors used were 50W6Ω for "stage I" (lighting during the night and when low beam is selected manually) and 50W7Ω for "stage II" lighting during the day.
Load resistors heat up like light bulbs. Therefore, they must be installed in a way that make no contact with no paint or plastic.
