My Cerbo is fitted in a van, with some exterior lights. These lights are connected to 4 relays that control each of the sides of the van. With an internal screen, I can send 12V to activate the relays and light on the lights.
My question is if I can put a +12V to the common port on the #2 realy of the cerbo, and the connect the cerbo to the same internal screen, to activate the lights from the Cerbo. Will the Cerbo have a problem if the current from the other screen goes to his #2 realy? Do I need a diode or something in the middle?