Extruder 0 on PIN D8??? (2 replies)

Hello,

i have connected the extruder on connector D10 an the fan for the Extruder on D9, but nothing happens, neither the extruder becomes hot nor the fan is running. I have measured the voltage at D10, D9 and D8 and asserted that after turning on the extruder the 12V are at D8 and not at D10. So changing the extruder on D8 it runs. But why at D8 and not at D10? I tought D8 normaly is for the Bed. The fan at D9 still doesn´t run.

Does anybody know why? I am using Marlin, are there any settings to change this?

Thanks for helping.