Relay Mounting Plates

[diablo]

I asked this question this morning in the technical section but will try to add pictures here. Which one was used for what years?

[diablo]

How to turn them around? How about the extra bracket? The one with the add on bracket was off a 51 pan I think???

[KNUCK]

Palmers book "How to restore your Harley Davidson" has all this information. On eBay first edition for $130 or third edition for around $200 shipped.