Ok so i have to make buzzer 2 go off when pb 1 is pushed, and have to get buzzer 1 to go off when pb 2 is pushed. I can only use the three wires in between both sides.
I have wired it up with actual wire but don't exactly remember how i did it, and i have a feeling it will be on a test soon.
Any help would be appreciated, will post if i think i've figured it out.