I dont think any of the JDM ITR's had the Auto settings...they had the same parts as the USDM ITR's.

You're going to have to take out all the internals of the JDM one, and replace them with the internals of the USDM one. Its kinda tricky if you dont know what goes where, but its not that hard. Before you put it in, connect it (its a biatch because the harness cables are so short) to see if everything works and all the bulbs light up. Good luck.