Hatteras beeping alarm, solid warning light on.

[SouthernPride]

Not sure if anyone can help here. My Hatteras 53' is on the hard. I was working on it, sanding the teak. Alarm starts blaring off and on at the helm. a light comes on at the front panel to the lower left of the helm wheel, solid on. It is a 4 light indicator. The bottom light is on. The labels on the plate are worn away so I can't read them.

Completely shut power down, pulled the plugs from the ground transformer feeding the boat. The light is still on. I thought it might have been the CO2 detectors picking up the smell of the stain and polyurethane I had been applying.

Any ideas ?

Thanks