Originally Posted by shrew
Technically, doesn't turning the key to ACC. act as the Alarm Test mode? I was always under the impression that that is why it sounds. It verifies you have power to the starting system and that the alarm is working.
Most boats don't have an ACC position on the ignition switch like cars do. I think you mean the RUN position and yes that will test the alarm as the oil pressure switch is closed due to no oil pressure as the engine is not yet started. Once the key is then rotated to the start position and the engine starts releasing the key returns it back to the RUN position but now the oil pressure switch is open because oil pressure exits.
The OP has not provided details as to why he thinks its not working.