This is how a Sequential turn signal works.

It's called a rotary cam limit switch and lots of old industrial automation process used them as well.

Any bets on whether it was all manufactured in the USA? Today it's $1.00 worth of parts manufactured in China they charge $500 to replace.

I ground the cams on mine so it lit only one bulb at a time.

Always thought that was so cool and effective!

I had a 1964 ford thunderbird and it looked like a turn table in the trunk that controlled the tail lights

I love that. Analog methods. I work a lot with relays and timers on hvac and I’m real excited to analog program stuff for my kids tree house.

And your 1967 sequential turn signal would have worked just fine after that massive EMP wiped out modern car electronics.

67' Cougar. They have modern electronic conversations for them now

I'm never going to look at Knight Rider the same ever again.

I wish they made things like this still instead of how they make them now.

I can literally hear the electrical wind with my sound off. Been around too many Mercury Cougars to know that distinct sound 🤣

Friend of mine had a 1970 Cougar. Those effing tail lights were a constant pain in the ass

Human ingenuity is a miracle. It doesn’t matter how small or simple .

Did you think Bill Gates was inside running it by hand?

So now it works on a chip and...

The little motors in your taillights waiting on you like this when you have a flat tire 😂

Old school

Clever tech. But they look as stupid as modern day strobing indicators/turn signals do.

Much better than a circuit board.

Old school baby, old school!

Cam out with your clam out

🤣

I had no idea. Wow…

CRay , cray !!!

Now, I know.

I thought it was a box of gremlins, that's why I would never work on those

Ha! Always wondered about that, but just something to wear out...

I had a '69 Eliminator. I believe it was original and it had the SCR type control board in it. It never did work well.

life used to be so simple and straightforward

Those were so cool—when they worked.

Cool