Acc side of fuse box doa

Any idea what would cause just the acc side of the fuse box to quit working?? everything is new all ne harnesses, accept the column harness ( I have a I did it column I will be installing in the near future) everything was working fine in till last weekend I went out to go for a ride and nothing on the ac side worked? Radio, ac, back up lights, and tach, I don’t want to put the new column in in till I get this figured out.
Author: Cratos