Hall effect crank shaft / cam shaft sensor

[nzmikec]

Hi,
Looking for a bit of info on how to hook up a hall effect camshaft and crankshaft sensor. Image attached shows how to test the sensor so I know which pin does what, and I know I need to hook crank signal to VR1IN+ and cam to VR2IN+, but need further info on ground and power.

Should I use 12v ignition switched power or VRef for power? Should I use Sensor GROUND or VR1IN- and VR2IN-?

Microsquirt documentation for VR2IN- as follows
"This is the ground pin for the second variable reluctor input (typically for a VR or Hall camshaft sensor). For use with a variable reluctor sensor (that has an AC signal) connect this wire to the second VR sensor wire. For use with a Hall sensor, leave this wire 'floating' by snipping it off and sealing it."
Does this apply to my inputs?

Thanks.
MikeC

[Matt Cramer]

Use sensor ground.

Whether to use VREF or 12V will depend on the sensor.