Electrode wire hookup on HP10 50 gallon Heat Pump water heater

I took my electrodes out for the first time since purchasing to check them. The top electrode two wires are blue and the bottom electrode wires are white and black. My question: After you screw the electrodes back in:
on the top, I hooked each wire to the contact on the electrode that was the closest (right and left).
On the bottom: the white wire was on the right side and the black on the left....when you screw the electrode in...does it matter which wire goes to which contact as they both appear identical. Thanks for information.
Mike