ralley cluster problem

I pulled out the gauges from my 68 yesterday. every pin on the back of the main cluster was broke. not problem I guess, i have a spare board. One of the pins on the other board was broke as well and the other two are loose. Before i pulled the cluster, volt and oil pressure worked.

Once i put everything back together on the cluster, how do i check it before i install it. I originally thought the volt limiter was shot, so i have one ready to go. now that i found out the pins were broke, do i assume the limiter is good?

What would you do?