Ballast wiring

No idea what's on your car.
Here's what it left the factory with

That is interesting: The 'repro harness 15-years old' pic shows a Packard terminal. The sprung tongue indicates that.

Those are NOT the terminals I have. Mine do not have the sprung tongue. Mine look like your 'factory '67' pic. The only contact tension comes from the bends on the edges. Unlikely it's not an OEM setup. I haven't changed it. I bought the car in '75.

An answer to this will work for me: The M&H repro pic as an example, with Packard terminals, DOES fit/snap into the factory terminal body used at the ballast connection?

If that is true, I can use Packards as a replacement for my NON-Packards and it will work just fine. I would much prefer the additional surface area the Packard female terminals have.

Thanks Mattax, for reading with comprehension. My question explicitly has to do with the terminals...NOT heat from a ballast resistor, The Law of Ohms, and, frankly, not anything to DO with the ballast resistor. Just the connectors.