I know this should be simple but I can't seem to find the information to do this without risking damaging my controller board. This is the last thing I need to wire. Can someone direct me to a schematic or detailed instructions to do this?

It's a simple Amazon alligator clip touch off plate, nothing special, 2 wires and that's it.

I tried connecting the wire from the alligator clip to the ground and the plate wire to input 1-11, configured it in uccnc and I get nothing... so obviously I'm doing it wrong.

I have the c78 rj45 connection board and using the limit port for my limit switches... could I use one of those ports to configure the touch off plate? I have port 2-11 available but it uses 24v.