That would have been my guess. Thanks.I had a similar question.
Oil Pressure Indicator [and Temperature Circuit Board]
When we bought our 1986 Ericson 32-3, there was an oil indicator toggle switch with adjacent space for a light on the ignition/instrument panel. I quickly figured out that the toggle wasn't actually connected to anything. No wires, no actual switch, no light bulb. There is a single...ericsonyachts.org