Thanks for all the hand-holding on this, I do appreciate it. I opened a camera up and carefully cut one wire, tested, reconnected, cut another, etc., until I had tested them all. I found the sensor and LEDs appear to be wired in series because when I got the LEDs to not light, the camera would stay in daylight mode in complete darkness. I have wondered at just twisting the two LEDs closest to the sensor off at the PCB to break the connection, but absent a wiring diagram I am hesitant to take such drastic steps.
I could just mask the lens opening and a spot over the sensor and shoot black spray paint onto the glass over the LEDs, but then I have to line it up precisely when I screw it off and back on. I also wondered about light emitting around the sensor, behind the glass, leaving a glow and perhaps fooling with the sensor, so I haven't tried this.
If someone has a wiring schematic for the PCBs used in these three cameras I could figure out how to disable the LEDs. Without a diagram I hate semi-destructive testing, which is what it basically is when you disassemble one of these things and start cutting this and that and then try to put each thing back as it was.
Maybe someone else will see this post, have had the same issue and they will have either a simple solution, or a step-by-step process that they have used. And they can provide all of that with easy to understand English.