If you cross the main power and ground wires things get ugly. It will short with enough current to make the teeth on jumper cables glow orange. That happens within 10 seconds of connecting the two wires. Leave it like that and smoke will follow in a minute or so. No doubt it's hard on the capacitors inside the motor.
BTW... Temic and Brose make the fans for Mercedes. The motors I have were made for them by Siemens.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
