Parking sensor wiring corrosion

[GBCB1986]

So I’ve got it through it’s MOT and thought I’d tackle my parking sensor which hasn’t worked for ages. Got it all a part, put the new sensor and....still doesn’t work. Tried the new sensor in another position and confirmed that it isn’t the sensor at all but the wiring. After further investigation I found that the wires going into the connector on the loom are corroded. Anyone had this before? If so how have you tackled it? Is of a mind the try and clean up the corrosion.