ST 2000 not working and not

displaying on LCD. I have traced the wiring and it is intact. A VOM at Pin 2 (blue) and Pin 1 (brown) of the bulkhead connector reads - 13.3 V. Does this mean that the deck connector was wired backwards and the ST 2000 will not work if connections give a reversed polarity? Is there another way to check this?

The cable from the DC panel has the white wire going to Pin #2 and a black wire going to Pin #1.

The unit is not wired for SeaTalk or any other interface.

The unit is like new and I am not sure it was ever used or found to be working....

Thanks,
Skipron