Welcome to Just Answers, I'm Kevin and I'm here to help resolve your Automotive issue.
Hello, I think you have a steering pump from an XT6, which had a "cybrid" system, its an electric driven motor. There is limited info on these systems since it was discontinued in 1991. I may be able to retrieve the wiring schematic for the whole system on the car if that will be sufficient?
The heat pad is to warm the fluid in cold weather as I recall. I am attaching the wiring diagram, should help you.