Vin, there are lots of wires inside the switch to be sure, but you really only need to be concerned with 3 to resolve this issue. Using a multi-meter or some other means of checking continuity will greatly simplify the process. Checking continuity, you only need to identify which of the 3 terminals (Aux Power, Track Power or Ground) is connected to the center rail and which terminal is connected to the outside rail. The remaining terminal should be Aux power.
Once you've identified which terminal is which, how you deal with the issue is a matter of personal preference. The choices include:
- Relabel the terminals on the cover plate using masking/painter's tape and a marker or other method
- Reposition the terminals so they correspond to the stamped markings on the cover plate
- Resolder the wires to the terminals so they correspond to the labels on the cover plate
