64 Dart cluster connector

I am familiar with the style dash board voltage limiter you are talking about. It doesn't have anything like that that I could see.
If the regulator is not the same as factory and has been changed to electronic, is it possible it got fried in the process of messing with stuff? I fried my Pertronix electronic ignition module during circuit testing the new harness and why my cluster lights were not working… so bad things happen to newer electronics mixed with old cars.