I was busy dipping my parking brake pieces in thinner to remove the undercoat and found my 2A605 also had a zinc coating on it.
As I understand the conversation here, that labels it a replacement part. I pondered why, so I gather it's due to lack of lube at the 's' points of the 2628 and its brother 2853 going to the front?
But after looking at my parts it appears there are at least two different versions of the 2A790 connector.
67gta289 shows one version and I have another on my car as shown in the attachment.
Another 67 date thing?