I have seen two different connection diagrams for the GPS antenna and the Interlink module between two units. One diagram shows the GPS antenna connected to the Interlink, and each of the Interlink cables going to their respective locator. The second diagram shows the GPS antenna NOT connected to the Interlink, but using a y-cable to split the connection between to GPS locators. Humminbird customer service suggests using the y-cable, but some of their support docs show the Interlink connection.
What are the advantages/disadvantages for each of the connection types?