Reply To: Headlight reflectors

[Kim Scorah Bourget]

The filaments when looking into the headlight reflector would be horizontal

but stacked vertically.A good way to understand this is to say look at the headlight from say a 1931 Ford A with the door removed or even say a 1931 Chevrolet.The beam when shifted from bright to dim or vice versa should go in an up and down motion not in a sideways position.The 1930 Pierce Arrow system is identical in design to the headlamps on virtually all US cars of that 1930-1931 period.If you look in a headlamp of this period with the door removed.You will note the positioning of the filaments.