Not sure if this is the right category to post this in but I have a basic electronics question.
I am trying to set up a Light array where I have have 3 lights that need to be powered from 2 separate inputs When Input A is Hot, Lights 1 and 3 need to turn on. When Input B is hot I need all 3 lights to turn on. Currently It would seem I am back feeding into my 2nd light when Input A is hot, I believe in Need a diode in between light 2 and Input B to stop it from lighting up when Just input A is hot, but I am not sure what Diode to go with. this is a 12 Volt Circuit pulling 4.5 Amps.