in the shown solution you need 3 diodes (for each side! = 6 in common) and you 'override' the control box.
You can do it much easier:
By using the V2 Basis, you don't need any external diode. You have then only to connect one foglight to the additional input of the V2 Basis.
By using the V1 ex, you have only to use 2 external diodes connecting the ignition/DRL signal and one foglight signal to the ignition input (pin 1) of the control box.
By using the V1 ex it's not really necessary to connect the fog signal to pin 6 in your case.
You can connect ignition/DRL via a diode to pin 1 (Zündplus). Connect ignition/DRL signal to anode (+) and the cathode (-) of the 1st diode to pin 1 of the control box.
Connect fog light signal via a 2nd diode to pin 1. Connect fog light signal to anode (+) and the cathode (-) of the diode to pin 1 of the control box.
Pin 6 of the control box can be left free then.