E80 and E120 conflict

[Chuck - Raymarine - Moderator]

TickMan,

Details of how a system featuring E-Series Classic MFDs should be interfaced to one another and to the system's other devices may be found within the E-Series Classic MFD Installation Manual. Indeed, it may be necessary to chase the systems cables in order to determine how the system has been interfaced. However, before doing so, I would recommend reviewing the FAQ found here to learn more about troubleshooting this problem. Should you not have the background or desire to trace / troubleshoot the system yourself, then it would be recommended that a Certified Raymarine Installer be contacted to do so for you.