When creating an Address Locator it is possible to map "Additional Field" to a field in your reference feature class. I have no issue doing this but am unable to figure out how to access this information when using the Address Locator. The help shows:
I hope this makes sense...
I am marking Chris with the correct answer since he pointed us in the direction of looking at the outfields. However, the information provided by Kelly and Tim is worth looking at! Thanks to all for helping me with this issue.