1941 Buick Special - what is this?

[First Buick]

Can someone please tell me what this little gizmo is that comes out of the steering column just above the box?  The wire to it is very frayed where it comes out of the harness.  Since I have to open the harness a bit to put in a pigtail for my new brake light switch, I would like to make a new one for this also.  I can't tell what gauge the wire is but if I know what the gizmo is, I can check the wire gauge on my wiring diagram.  Thanks.

[Matt Harwood]

Horn. That wire should go to the horn relay.

[Ben Bruce aka First Born]

1 hour ago, Matt Harwood said:

Horn. That wire should go to the horn relay.

 

 AND it is a ground wire, grounding the horn RELAY.

 

  Ben

[Morgan Wright]

It's the horn.

 

 

 

 

 

(I just figured if 10 people tell you it's the horn at the same time, it will sound as loud as a '41 Buick horn)

[Morgan Wright]

And don't forget to bleed the brake light switch or it won't work. Ask me how I know.

[First Buick]

Thanks for the replies.

And how do I bleed the brake light switch?  There are no holes in it other than where it connects to the system.

[Morgan Wright]

Leave it a little loose, put your foot on the brake lightly, and go back and tighten it. You just need to get a bubble of air out.