I'm having an issue here. In the attached schematic, I only want LED2 to light when the switch S1 is pressed. As the circuit is currently drawn, LED1 is always lit since it's wiring is backfed and I obviously have a ground issue... It's been 6 years since school and I haven't touched electronics since; I've obviously forgotten something. Any help? ETA: For simplicity, I've left out the pull-down resistors on the inputs of the AND gate.