Kudo for "Balls to the Wall"

We've all heard the expression, "balls to the wall". I've checked the Net and elsewhere and haven't see it. (Doesn't mean it's not there, but....) There are some close references but none referred to a control and the specific devise it controls, which most are probably familiar with. Hint: dates back to the '60's or late '50's. Kudo to the first one who can come up with the answer.

There's no question?

It's a fighter pilot jargon. When you push the throttle all the way forward. The throttle levers are indicated by balls. I'm guessing that's what you mean.

Nope. While there is a sexual inuendo, it doesn't deal directly with sex.

To push to the limit, go all out, full speed.
A very colorful phrase, one needs to be careful when using "balls to the wall". Although its real origin is very benign, mos people assume it is a reference to testicles.
In fact it is from fighter planes. The "balls" are knobs atop the plane's throttle control. Pushing the throttle all the way forward, to the wall of the cockpit, is to apply full throttle.

https://www.carlist.com/autoglossary/autoglossary_42.html

What I mean is, you want an answer, but there's no question to answer

It is fighter pilot/pilot training jargon, but it stems from something more.

A term referring to the rotating governors used on steam locomotives and related steam engines such as tractors. The brass balls acted as weights on the end of linkages, and rotated with the increase in RPM of the engine. As speeds rose, the balls swung outwards, rising on the linkages. At a pre-set height, the release valve would engage, lowering steam pressure and reining in the RPM to the allowable maximum. The balls rose towards the firewall and/or the walls of the cab., hence the term.

Wrong wall.

Sounds something like what a prison officer/guard would bark at someone when about to conduct a cavity search.

Sounds more like what happens round the back of a nightclub.

I'm glad I have never frequented the same kinda clubs as you then

Yes, it's picked up a wide variety of secondary meanings. It definitely has to do with the throttles.

Everything that I've found contains some variation of what Hazuki0chan said.