ST290 GPS and NMEA issues

[smorast]

Thanks, appreciate the candor.

You are correct, my original issue was intermittent lat/long on 290 graphic display. That continues to be the case, but not overly concerned with that as long as other data is correct, which it all appears good to go.

Hopefully, the new diagram provided clarity. I still have a question on DPU power. (See previous post).

As to the original power questions/concerns for stng-st1...in my config, would I see 12v on the st1 side of the center tapped connector? Even if the backbone didn't have a 12v sourced spur?