Thanks Sam,

If I need to use 24VDC to switch a relay, would use 24VDC B Battery Ground as the audible supply and then B Battery as audible supply ground?


What I was thinking since I think I might a have a Expansion Module for my DICM unit is leave the first unit in the original configuration and then use the Expansion Module for switching the relays since the Expansion Module does have a separate audible supply input.