Hi I am doing full s2000 swap in my mazda rx7. I have full chassis harness and emmissions. I am trying to do a california legal swap in my car. I am in the processes of getting everything ready for the swap. I just ran into a small problem. I attached a picture. On this auxiliary fuse box there are two bolted terminals. one terminal goes to the battery and the other terminal I have no idea where it goes. can someone help me? I have looked on the service manual but it is hard to see. any help is much appreciated. thanks.

 

Per the 00-05 Electrical Troubleshooting Manual, that's known as "T7" and goes to the starter solenoid.
If you are doing a swap, I bet this manual would save you a lot of hassle!