Trying to understand how to wire the hall effect sensors from a car seat motor. The part # given in the image below seems to be an Allegro device. I can't figure out how to wire these. Everything on the right of the terminals seems to be internal to the motor but not sure. It seems pin 2 of the sensor is where you'd get the output from. However, according to this schematic, there is no way to access that pin. Do I need to provide a pullup from the OUT 1 and 2 terminals and then take the signal from there on to the board?

 

Some tachometer senders generate an AC voltage in that range. If not, you are probably right needing pull ups on out1 and out2.

2 outputs probably make a quadrature signal.