I am trying to load pics. all by myself this is the first one! I think I went to small. is this for mag. lights?
A little too small to read the writing. What does it say? Also, is that where it is mounted on top of the passenger headlight?
Hap l9l5 cut off
Better pic. Maybe
It's a dimmer that mounts on the steering column.
I googled Rex Headlight Controller and found write ups on it in period trade journals:
One narrative said it worked especially well on Ford cars. Another said it could be used with all cars.
This is a subject that has always fascinated me because so little is known of it but apparently early drivers struggled with it for over a decade.