I had my PropScope attached to pins 56 and 57. The PropScope was clipped to the male end of a male-female jumper. I then noticed that those LEDs were lit even if I was not using those pins. A high would turn the LED off. I disconnected the PropScope and investigated. With the jumper connected to P58, I can turn on the LED dimly by placing my fingers close to the jumper. After about a second the LED turns off. If I touch the insulation the LED turns on brighter and stays on as long as hold the jumper. With the jumper connected to P56 or P57 the LED is on all the time. I don't understand.