So I was poking around under the hood of a 3.8 liter Taurus at the junkyard last week. You know, the one that has the 2-speed fan that seems to burn up normal relays with its massive current draw. I unwrapped part of the wiring harness to find out where the power feed for the fan comes from. The ground wire from the fan is a heavy one, that connects directly to the negative battery cable. /forums/images/graemlins/eek.gif However, each of the power wires split off into two wires just before the control module that is mounted just above the fan. So I have a few questions... Does the factory service manual show what is inside that control module? I'm wondering if they have two relays inside for each circuit of the fan, or do they use electronic switching? Does the low speed power stay on when the fan switches to high speed mode, or does the low speed circuit switch off? What else does this module do? It has far more wires connected to it than are needed just for fan control. Does anyone have some drawings that they could scan in?