Auto Parts: Floorboard dimmer switch, 67 chevy, associate states

Question
Do you know when General Motors came out with their first dimmer switch?
Thanks...

Answer
Hi David,

Got me there. My first ride had one and it was a 67 Chevy. An associate states he had a floor dimmer in his '58 Country Squire (Ford) but I'm not sure if it was the same style.

Thanks for the question, I hope this information is helpful to you.
Kb