Interesting results....

I put the black probe in pin 3 (red/black wire) and the red probe in pin 1 (blue wire). I got a 0.0X reading. With the black probe still in red/black, I put the red probe in the 5V red wire that has been disconnected. I measured the 5V as always.

Now, I moved the black probe to pin 2 (black) and measured the voltage on pin 1 (blue) and my multimeter measured around 19V. What the???