Guys/ladies, I just had a wiring question that i hope can be easily answered. Looking at the directions for the keypad I see that the data bus cable has a black/white/green/& red wires. The data bus cable splice/connect into the keypad wiring of the same color. What should be done with the blue and brown wire. I see that the resistor should be connected to the blue wire and then back to the black wire. I'm at a loss for the brown wire though. Is it necessary for the blue wire to be hooked up? Does the brown wire go back to the black wire? I'm a little confused. Can i please get some guidance? Thank you.