rover 75 diesel wiring corrosion

hope someone can help i have removed the carpet to dry them out and found the reason why the radio dont work i think there is a blue connector that had got wet and rusted the wiring when i touched it all the wires broke off the blue plug got 6 wires that should be going to it the colours are purple and white 3 of them and 3 red and white wires and i dont know how thay are connected hope someone can guide me cheers

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