How do you replace the gem module on a 1995 windstar?

To replace the gem module on a 1995 Ford Windstar, first disconnect the negative battery terminal for safety. Locate the gem module, which is typically found under the dashboard on the driver's side or near the fuse box. Remove the screws or bolts securing the module, disconnect the wiring harness, and then install the new module by reversing the process. Reconnect the battery and test the vehicle to ensure proper operation.