Bills65Dart said

There is a difference in the glasses for 5 3/4 lamps, look at these from Summit. Look at the lamp from the side, how the glass is. It does not look like the original sealed beam lamps. I used to have these for the upper lamps for my '65 Galaxie, the high beams and low beams. And regular sealed beam halogen for the lower ones, which was only high beams.

Hella Vision Plus Conversion Headlights 002850001

These are not ECE lamps, but the picture shows how the glass looks like from the side.

The next link is for the same 5 3/4 lamp, ECE approved,

Hella Vision Plus Headlamps 002850811


Then, the 7 inch, they have a look more like the original sealed beam ones,

Hella 002395801 7" Round E-Code (ECE) H4 Conversion Headlight Kit


I don't really know the reason for the glass on the 5 3/4" lamp being moved more forward. But, I wonder if it is to give the glass a certain distance to the bulb / filament for the glass to properly adjust the light pattern.

It is also possible to find these in big and small rectangular sealed beam conversions. And the same H4 bulb fits in those too.


Bill

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