ST290 GPS and NMEA issues

[smorast]

First, appreciate the reply.

I would like to reiterate this is my first go around with Raymarine. I would also submit I am at the mercy of the professionals that have previously worked on the system...so please bear with me in resolving their improper installation.

I have attached an updated diagram and documented my proposed solution, which is to eliminate the connection between STng/ST1 network. Then just activate the E125 internal GPS and have two independent systems that are no longer in conflict. Would this suffice to eliminate the issues?

If this path is selected, should the seatalk1 RED 12V and bare wire (currently connected to DPU POWER IN) move to Seatalk1 inputs if S3 provides power?

Is this a technically acceptable solution?

Again, thanks for lending me a hand in trying to remove any issues in the system and making it safe for ocean navigation.

V/R,
smorast