I´m currently trying to breathe some new life into an old Duplicator 4S which includes an upgrade to an SKR 1.3 Board. The only challenge I´m currently facing is the connection of the Heatbed. The D4S´s heatbed has a total of 6 connectors - 2 power supply connectors and 4 appear to be for the thermocouple. I joined the 3D-printing party fairly late (2018), so all I have ever seen were two connectors for the heatbed thermocouple. That's why I wanted to ask what the two additional ones were for and if anyone knows of an easy way to connect the thermocouple to my beard, which offers only two connectors for the heatbed thermal measurement?
Ok, so according to the following link two of the connectors are common grounds. Does that mean I can simply connect those to a ground pin on my board?https://beta.ivc.no/wiki/index.php/MakerBot_Replicator_1_Upgrades_and_Repairs#Heated_build_platform_connector_replacement