OK, so 16 watts is being carried through the resistor, but when the battery cable is actually connected to the negative terminal, I'm actually getting 50 watts somewhere? That's huge - I'm surprised I don't hear or feel something, and that the car hasn't caught on fire. Come to think of it, I'm at the point where I'm thinking that could be the best thing that could happen to this vehicle, lol.

As far as the aux radiator fan, I think we're just differing on semantics. I located the connector to the radiator fan in the area you described way back in post #7 of this thread, disconnected it, and got the same 4 amp draw as when it's connected. I don't know why I called it a "switch" - it's actually a connector.

I'll check to see if I'm getting 4 amps through the fuse tonight. It's been raining, and the car lives outside, which has limited my test time lately.

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2003 X5 4.4i
1992 Porsche 968
2007 328i
2014 Subaru Forester XT