multiblitz
I took the daughterboard out.
I hear the relay clicks, but the measurements are the same across those pins.
I measured now those pins against 0V (Output – of J5): with battery on I have 13.3V on each pin and with battery off I have 16.3V on each pin.
Q1/Q2 DMN6075S-7 is out of stock, how about: https://cdn-reichelt.de/documents/datenblatt/A200/MMBF170_ENG_TDS.pdf