The use case is the following.
On my vehicle I have installed an alarm system that has an option for a negative output trigger when it goes off. I would like to have the alarm connected to my FMB920 so that if the alarm goes off, I get notified via SMS and on demand tracking is activated.
I have connected the alarm's trigger wire to FMB920 DIN1 yellow wire. I have measured the voltage between the red wire and the yellow wire and I get a +12V when the alarm is activated (multimeter's positive probe connected to red wire, negative probe to yellow wire).
However, when the alarm is activated, DIN1 value does not change from 0 to 1 and nothing happens.
I tried to follow the wiring diagram here.
Am I missing something?
