Hello, I've been struggling with no AC since i bought this car 2 weeks ago. I have tried to diagnose whats wrong with it but i have no answers to the cause. I've tested the harness that plugs into the resistor with a multimeter and it's not showing any voltage on any of the AC blower settings. All the fuses are good.... what do you guys think it could be? 2004 3.8l and it has the resistor that only have one plug and the metal fins instead of the chip.