So I am in the process or reverse engineering some of the SnapMaker components so I can use a different controller with them. As I figure out how things are wired I am going to edit this post with that info.
3D Printing Module:
PIN1: VCC, Heater Socket Pin 1, Fan+
PIN2: Stepper Coil A+
PIN3: Heater Socket Pin 2
PIN4: Stepper Coil A-
PIN5: Thermistor Socket Pin 1
PIN6: Stepper Coil B-
PIN7: GND, Fan-, Thermistor Socket Pin 2
PIN8: Stepper Coil B+
Heated Build Plate:
PIN1: Heating Element +
PIN2: UNUSED
PIN3: Heating Element -
PIN4: UNUSED
PIN5: Thermistor +
PIN6: Thermistor -
The heating element registered as 12Ohms so 48W at 24V. The Thermistor gave a reading of 80kOhm in my 90 degree F garage.
Linear Module:
PIN1: Coil A +
PIN2: Coil A -
PIN3: Coil B +
PIN4: Limit Switch +
PIN5: Coil B -
PIN6: Limit Switch -
Please note I am not positive on the coil polarity.