Thank you Azimuth Aviation. I appreciate knowing that it does not matter which of the large ones go where, it answers my question completely.
Thank you RMAC58 for your offer but it isn't necessary to get under the car at this point.
MrBrits, I fail to see why it surprises you that one enthusiast would crawl under their car to aid another! In the MG world of enthusiasts we drive 50 or more miles to spend the afternoon working with each other's vehicles, to share talents, knowledge and muscle or to point out something that defies verbal description.
Crawling under my car and taking a picture would have served no purpose in that it would have shown three wires and three spade lugs. My question would not have changed; "The small goes on the small, which spade goes in the middle?"
The answer to which was simply "It doesn't matter."
Here are a couple of photos of the alternator as it sits. I do not like the fact that the DPO didn't put insulated connectors on , they could short to the housing of the ALT.
Thin skin never helps you on the web, or under the hood.