How do I test my window motors? They are out of the car and hasn't run for 20+ years. Thought I would test them before I put them back in.
The shafts seem to run pretty tight - I can barely turn them with my fingers. I have another NOS motor and it spins much more freely.
Can I simply connect the motors to a 12V battery ? and how do I do that - which wire-terminal is ground and which is plus ??
Original Post