1. Take the red and yellow thermocouple sensor wires of the old hot end (you marked these during disassembly).
  2. Insert them into the green screw terminal of the thermocouple transmitter board that is positioned at the front side of the print head by using a flat screwdriver. The red wire must be placed in the right hole; the yellow wire in the left hole.
  3. Connect the wires of the other thermocouple sensor to the thermocouple transmitter board at the back side of the print head. Make sure to place the red and yellow wire in the correct hole of the screw terminal.

Connecting the thermocouple sensor