E&Js: Inside The Light

I bought the lights a few years ago on ebay for a good price considering their condition --100% original.  My reason for buying them is still unclear even to me.  But I really wanted to get inside, to see how the work.

Yes, all original, grime too.

The lens opening measures only 3-3/4" wide...

12" long...

With the fixed mounting stud, overall height is 10-1/4" tall.

Overall case diameter, is 7-3/4" 


The mounting bracket is steel.  It is bolted on with another bracket inside making it quite stout. drainage holes keep water from puddling inside. 

Lets go inside:

Turning the screw several times counter-clockwise loosens the latch.
Next, gently split the housing.  The housing is aluminum.

Sophisticated internal light projector assembly.
You have to imaging the headlight assembly mounted on a car rather then this table.

The latch from the inside.  It is attached to the top half so nothing gets lost.

Spring loaded fork keeps the two piece reflector together.

To change a bulb, carefully prying the fork up freeing the back reflector.
Looking through the lens from the insides with the lower amber half-lens.
This amber lens is cracked, they are quite fragile.
Here, some sunlight shining through.

The reason many E&J original lenses have a purple hue is due to the small amount of manganese in the glass. Over time ultraviolet radiation from the sun oxidizes the manganese, which becomes purple.
Green glass, for your infomation, is produced by adding iron oxide to glass during manufacturing.

Close-up of original Mazda bulb.
There is a cardboard gasket between the two reflector halves.

The forward reflector is held to the front plated bezel with 3 polished screws.  There is a gasket between the lens and housing.  Then another gasket between the housing and reflector. When the reflector is removed the lens simply falls out.  The bezel is bolted onto the lower half housing.

The complicated bulb holder, but there is good reason...

On E&J lights, the bulb moves up & down, side-to-side to align the light beam. In other words, the housing is fixed and the bulb moves, unlike the typical headlights of the era.
Look at the picture above again. By loosening the two screws, the bulb socket is free to move around.

The original bulb is a: GE Mazda 1000, 32 & 33C, 6-8V --that what is on the bulb.
Each half or the shell has alignment tabs insuring a tight fit.

The End