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The resister is located in the evaporator case between the blower motor and the evaporator under the hood on the passenger side. It's held in by a couple of screws. The whole resister is a ground circuit. One of the wires coming off of it is a ground wire and the switche directs the path through one of the resisters to that wire. I'm not sure exactly where on the vehicle it actually grounds but that's not important. If for any reason it's not grounded, it can be grounded anywhere.
PS, you should stop posting your e-mail address in open forum. We don't respond to them anyway.
See Figure 1
Fig. 1: Blower motor resistor mounting location