So i got a "new stock" replacement for a burnt out mmp. I solder the motor to it, and slapped it into the car. I noticed when i turned it on the chimes didn't play. I continued and did the Trigger calibration and it seemed to take it. When i give it trottle it makes a clicking noise from the motor.
Unplug the sensor harness and try it again- the 3 main motor wires have to be in a certain order if you run the motor in sensored mode ( with sensor harness plugged into the esc ).
The sticker on the MMPro case also has ABC markings (under the PCB where the motor wires are located). If that sticker is missing, you can try googling a pic of the MMPro to see where they would be.
Yeah, you should be able to solder a bullet connector directly to the tab, although, I would personally use a short piece of wire between the tab and bullet for a little more flexibility.
If you do direct-solder, make sure to be careful if attaching male bullets on the tabs because the solder can "wick" onto the actual bullet and may not work right. I would solder female bullets on the motor and use the male bullets on the ESC wires.