C80 waypoint does not show up on ST60 MFD

[wjj]

Hi Chuck,

Thank you for the reply.

My system is not set up with the SeaTalkng backbone. All connections of yellow, red and unshielded wires go to a common buss and distribute out from there, with the power supply coming into the buss. The system did work properly previously, where the ST60 showed bearings to waypoint and the autopilot steered to a waypoint. Because it all worked properly before, I do not understand why, or if it should, all be disconnected and then reconnected using the backbone system.

Is there a way to troubleshoot the wiring, using a multi meter or other device?

Thank you for any information help.

Wayne