I just pulled the fan, and it spins freely. I checked the voltage at the connector, and I get 12+ V at the red wire, and 0V at the other. If I want to test the fan to see if it works, can I run a jumper from the positive terminal to one of the terminals on the fan motor? To which one do I run it? Is one a ground? Thanks!

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1982 240D - 292,000 miles and counting
Same family for 33 years
Newly rebuilt Monark injectors
Newly replaced clutch
New Bilstein shocks