In the link their interpretation of relays is somewhat off.
The relay they show 2983696 and claim is correct road lamp relay, is in fact the key/head lamp warning buzzer for 1970 with A01 pkge.
It is not the 1970 road lamp relay as they claim and not assembly line installed for such.
2983696 is not seen in the parts book, but is the number cast on the key/head lamp warning buzzer ( part number 3420884 )as shown the parts book and what is shown in first pictures.
When you open the box that is what is packed inside.

Road lamp relay is in parts book listed as 3004186 but 2889916 is cast on the correct 1970 road lamp relay itself and again 2889916 is not shown in parts book.
The two units in question, shown side by side, bracket mounting configuration different, key/hd lamp buzzer on left, road lamp relay on right.
Part numbers are many times not the same as a cast number.