Heating Hotend 1 heats up Hotend 0 instead.

[ThyMollusk]

So I'm trying to configure Kimbra for my dual extrusion printer. In configurator I have selected:

-Ramps 1.3/1.4 (Power Outputs: Hotend 0, Hotend 1, Bed) -Heater 0 Pin: Heater 0 normally used for hotend 0 -Heater 1 Pin: Heater 1 normally used for hotend 1 -Heater BED Pin: Heater BED normally used for BED

In my RAMPS, I have connected the bed hotend to pin D8, hotend 1 to pin D9 and hotend 0 to pin D10.

Hotend 0 and the bed heat up properly. But here's the weird part: When I try to heat up hotend 1, hotend 0 heats up instead, even though it is in a different pin.

Any suggestions on why this may be happening?