| Year | 1921 |
| Date | 01-Dec |
| Volume | 45 |
| Issue | 1,075 |
| Page | 468 |
| Category | Automotive |
| Part | |
| Title | A Charging Cut-out for Car Lighting |
| Author | G.W.Ogden |
| Notes | Diagram of connections, elevation of buzzer, bell mechanism, arrangement of resistance, connections for testing |