From: William R. Walsh on
Hi!

> If one of those two wall switches (inside the garage) also controls
> the high outside garage light, it wasn't a very practical setup - to
> have two lights on at once, inside and out. Is that a known common
> configuration from the old days?

Basically, yes. I've seen a lot of old barns, sheds and garages that
were set up this way...you'd turn on a certain inside light, usually
the "primary" ceiling light and the outdoor light would also come on.
Many of these were pre-existing structures that were electrified
sometime in the 1930s-1960s. (Of course, I am in a rural area, so that
may make things unique.)

I suppose that the assumption was made that if one light was on, the
user probably wanted both, as if they were taking something out or
putting it in. It was probably also just that extra little bit
cheaper.

William