I was able to reach out to Hummingbird again today, I was advised to talk to minn kota because it seems like the GPS from the ipilot and the external were fighting for priority. I called Minn Kota who basically said it was a problem with hummingbird so ended up calling hummingbird back. Hummingbird finally said that it could be something to do with the Minn Kota heading sensor. I explained to the tech that removing power from the heading sensor of a Minn Kota had no effect on the Heading line. So hummingbird is sending me a Minn Kota heading sensor for me to try anyway. So I'm basically still at Square One, only way to get a heading line from the external GPS is to either power off or disconnect the link to the Humminbird helix. The Minn Kota Tech that I spoke with did say that it could be a possible interference issues such as magnetic interference and which I stated that if it were I would still have the heading lines they just would not be in the right orientation

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