Time/Date jumping around

[Sunbow]

I am working an the system wiring diagram, but it will take me a few days (we are moving the boat north to meet a scheduled family obligation, and are underway every day) and will send it as soon as it is done.

In the course of doing the wiring diagram, I found a data loop in the ST60+ instrument circuit, and removed it (which was feeding from a third ST-STNG converter)

Everything seems to be working OK now. All devices are showing on the Diagnostics/Select Device (same as I sent you before), and the time is not jumping around anymore. Apparently 9.40 was tolerant of this data loop and the new Lighthouse is not.

I am still getting an error message when I try to select GPS Data Source with the AIS plugged in - says ISO (60 216e e7 00 8c 8c c0) CAN(43) preventing device selection.

The time/date data source shows RS130 GPS selected and also available (unselected) is the ST-STNG Converter 0610276.

How do I fix the GPS data selection error?