Re: Steering wheel horn switch veiw

Posted by HH56 On 2018/1/8 9:43:10

It is a copper or bronze disc with a slight belled shape which keeps the disc from deforming under pressure. It rests on a larger fiber insulating washer which keeps the disc from touching the nut and steering shaft. When the wheel is assembled the disc makes constant contact with the heavy mounting plate which holds the horn ring assy to the wheel.

Here is a drawing done by Wes Boyer showing an exploded view of the assembly. I added the electrical path, items in red are at ground or earth potential and the item in blue is the mounting plate which presses directly against the wire end and disc. The pieces are separated by insulating washers when screwed together.

There is a very tiny gap between the heavy mounting or contact plate and the circumference of the horn ring. When the horn ring is pushed the outer edge of the contact plate and inner edge of the horn ring make contact blowing the horn.

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