My passenger door window (electric) quit working. I've tried eliminating things, and so far this is what I have. The window will not roll down from either switch (driver or passenger side). I've held one of those light bulb tester thingy-ma-jigs, and it appears current is not getting to the wires (going into the window motor). I've looked at the fuses, and I don't see any blown. Since my driver side window works fine I am confused. Is there a relay or something else hidden away that I should look at?