Mike, that connector comes apart very easily. There are two tabs on each side that you must spread outward. Once those tabs are spread, the side can be opened and the individual male connector can be removed. It's just a matter of finding another connector at the salvage yard and splicing it in place of the corroded one - no need to remove all the pins if only one is corroded. I'd try using a small dollop of anti-seize (copper-based - I know, I know, dissimilar metals, but the pin is a different metal than the copper wire, eh?) grease on the pin to prevent corrosion from reoccurring.