JD M horn button?

[MikeandKeri]

I’m not sure if the lever/button was for a horn. The screw through the handle keeps the lever from moving. The large round button is spring loaded and has one wire coming out just about four inches long and just hangs there.

Also, what is the hole below the gauges for?

 

[old]

I’m not sure if the lever/button was for a horn. The screw through the handle keeps the lever from moving. The large round button is spring loaded and has one wire coming out just about four inches long and just hangs there.

Also, what is the hole below the gauges for?

I don't think any tractor of that age ever had a horn.

 

[Wheat47]

Probably to adjust the radiator shutters to maintain engine temp.

 

[MikeandKeri]

I don't think any tractor of that age ever had a horn.

I was thinking it might have been an add on by whoever did the rebuild.

 

[Watthour]

I don't think any tractor of that age ever had a horn.

I had a '43 Case VAI that had a horn with the factory light kit.

 

[JIM MN]

On dash the top right button.. Used to open and close radiator shutters to control engine coolant temperature.. Hole below the gauges was used for all-fuel tractors.. A lever was there to turn a three-way valve to control gasoline to fuel to off..