Sources for Chrysler type wire terminals
The 59 Series is the 5/16" wide version of the 56 series, nominally 1/4" wide.
Drawings can be found here;
for 59 series
https://www.mouser.com/c/connectors/automotive-connectors/?m=Aptiv&series=59
for 56 series
https://www.mouser.com/c/connectors/automotive-connectors/?m=Aptiv&series=56
and 58 series
https://www.mouser.com/c/connectors/automotive-connectors/?m=Aptiv&series=58
So far we have found the majority of 1/4" and 5/16" terminals and connectors on Chrysler A-bodies to be very similar to
Packard 58 series. That was the point of
this post
Maybe adding text to the photo will make that clearer.

One reason this is important is that the connector housings are not always compatible. I am not the only one who has found original style terminals do not always lock in firmly to Packard typoe connector housings. Tried to make that point in
post 19.
Maybe adding text to the photo will help.

Sometimes they are interchangeable and sometimes they are not.
When they are not there will be a poor connection.
Some Packard 56 connectors were used on A-bodies as shown
here.
For the headlights, a 5/16" terminal was used, but its not a Packard 59 style. They are Chrysler's style with the rolled sides.

Please continue to post your findings.