1928 Cadillac - GM Heritage Center
1928 Cadillac - GM Heritage Center
1928 Cadillac - GM Heritage Center
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Lighting System<br />
Subject<br />
<strong>Cadillac</strong><br />
341<br />
LaSaile<br />
303-328<br />
Specifications<br />
Remarks<br />
Cleaning headlamp reflectors..<br />
Headlamp lens, diameter....<br />
Lamp bulbs, single or double<br />
contact<br />
A B<br />
303<br />
303<br />
303<br />
328<br />
328<br />
328<br />
11A in-<br />
10« in.<br />
All single contact except twofilament<br />
headlamp bulbs<br />
which are double contact.<br />
See note 1.<br />
Lamp bulb, sizes—<br />
Headlamp bulb<br />
Headlamp bulb<br />
Parking lamp bulb<br />
Instrument lamp bulb... .<br />
Stop lamp bulb<br />
Tail lamp bulb.<br />
Running board step lamp<br />
bulb<br />
Closed car dome lamp bulb.<br />
Rear quarter lamp bulb....<br />
Voltage<br />
Stop light, setting<br />
303<br />
303<br />
303<br />
303<br />
303<br />
303<br />
303<br />
303<br />
303<br />
328<br />
328<br />
328<br />
328<br />
328<br />
328<br />
328<br />
328<br />
328<br />
Candlepower<br />
21—21<br />
32—21<br />
3<br />
3<br />
21<br />
15<br />
3<br />
Mazda number<br />
1110<br />
1116<br />
63<br />
63<br />
1129<br />
87<br />
63<br />
3 63<br />
3 63<br />
3 63<br />
6—8 volts<br />
Switch lever in "on" position<br />
at %—1 in. movement of<br />
brake pedal<br />
See note 2.<br />
Can be used as permitted by state<br />
regulations.<br />
1. Cleaning Headlamp Reflectors<br />
To preserve the original reflector surface as much as<br />
possible, it should be polished with a good cleaner that is<br />
free from abrasive materials. A paste made of rouge or<br />
talcum powder and alcohol makes a good cleaner for this<br />
purpose. A clean cloth should be used and all rubbing<br />
should be done in straight lines from the bulb outward.<br />
Circular rubbing leaves fine lines which break up the beam<br />
of light, whereas rubbing straight from the bulb outward<br />
leaves lines parallel to the rays of light, which do not<br />
interfere with the reflection.<br />
2. Headlamp Bulbs<br />
Headlamp bulbs for <strong>Cadillac</strong> and La Salle cars have two<br />
filaments, one above the other, instead of the customary<br />
single filament. The filaments are located in different<br />
positions with respect to the focus of the parabolic reflector,<br />
and the beam of light from one filament is projected<br />
at a different angle from the other.<br />
When the switch lever is in one position one set of filaments<br />
is lighted and the beams are projected straight<br />
ahead, illuminating the road at a distance. When the<br />
switch lever is in the other position, the other filaments are<br />
lighted and the beams are projected downat an angle, illuminating<br />
more brightly the road directly in front ol the car.<br />
{81 f
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