Searching for a flag terminal.
Great info on automotive connectors:
www.rowand.net/Shop/Tech/AutomotiveElectricalConnectors.htm
Headlamp connectors are termed "Packard 59". They are wider than the "Packard 56" spades used throughout our cars.
Good you got me going. I found that the steering column connector in my older Mopars is a "Packard twin lock". Indeed it looks the same as the bulkhead connector on 60's GM cars (both 10-pin? I forgot).