Yeah I think it’s producing a picture by the sounds of it, just needs the trigger to tell it when to activate and possible ground if he’s seeing any flickering or potentially any long delays before activating.Edit, just seen this.
If it’s working it won’t need to go anywhere as it’s not needed and it’s being detected anyway
Seems he has it working now, my fault not reading the full thread, as usual.
@houst69 what year and model have you got an I’ll see if I can find the pin out for your original head unit wiring harness.