Heating element and thermistor plug wiring

[HKGBoy]

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Hi guys and gals

I am in the process of changing my hotend plug that goes above the stepper motor (my adoring child pulled it off) but as I am re-wiring I cannot for the life of me remember which way the wires go. There are two red and two blue heat shrinks at the plug end. Which is for the thermistor and which if for the heating element? Many thanks in advance

[Macflame]

The red are the heater wires. The blue, thermistor.