Today I swapped out my tachless dx guage cluster for an Si guage cluster in my eg hatch. I noticed before I put the Si cluster in that there were quit a few missing lights on the back of it. All the lights on it work except for the actual guage lights for the tach, speedo, fuel, and temp guages. Do I need to just take some bulbs out of the dx tach and put them in the Si cluster or could there be another problem? I noticed that the Si cluster had one more plug on the back. The plug was blue and was right next to the yellow plug at the bottom of the cluster.

This is the first time that I have ever swapped guage clusters in a eg hatch and I just want to make sure that I didnt miss something or in fact the clusters arent a straight swap.