I puchased a 86 300e with a burnt out motor. Replaced the motor with a 1990 motor. All went well. Runs like a top. But over heating is a problem. I found the original electric rad motor was ceased. Cleaned it and lubricatd it and have it running on the test bench, direct wired to a 12V battery. I installed it in the car and it will not run. I would love to have a wiring diagram to see if it is wired right. Thinking of wiring it direct from a switch at the dash. HELP.....