Sorry about that. I had nothing when I went ground to black/yellow and power to blue/white. I wanted to make sure the multimeter was good so I ran a wire back to my battery and left the ground on the black/yellow and had 12v.
I'm not trying to bust your chops, but it really helps me to help you if you are clear about what you do or are doing. Did you check ground on the Black with yellow wire? Power to one lead and the other to the black/yellow wire. This should give you 12V with no switch movement AND when you unlock.
Telling me when you "try grounding" isn't specific enough.