1952-59 Ford High pitched noise

https://www.facebook.com/groups/170632046437324/permalink/1248538905313294/

I'm hoping this like work for you guys. It won't let me add it as a video for some reason.

Can anyone help me identify this high pitched noise I'm hearing? Video is from under the dash inside the car. I thought maybe it was coming from the aftermarket speaker but it's not. Sounds like it's on the other side ofd the firewall but when i pop the hood, i don't hear it

 

Found the culprit. Clear tube is ****ing. If i disconnect the tube sound goes away.

 

I had the same noise on mine and it was the vacuum hose to the heater box valve... fixed that and the noise went away..

 

thanks for the reply sgt. That's exactly what it was. I disconnected the vacuum line and plugged it temporarily. I don't have a heater right now anyways so it's not like it was doing me any good right now.