Peter,
On my '74 Midget, the brass plunger is used to bring the horn's ground
circuit up to the horn centerpiece which is pressed onto the center of the
steering wheel. The "switch" is in this centerpiece. If you remove this
assembly and look at it from the back while pressing the horn button, you
can see how it works. When this assembly is pressed, the circuit brought up
through the brass plunger is shorted to ground and the horn beeps.
Hope this helps,
Richard Shipman
'74 Midget
'68 MGBGT
'58 Morris Minor 1000
At 11:07 AM 5/27/99 -0500, you wrote:
>Herb,
> If you look at that plastic and brass plunger, it has a wire connecting
>the 2 brass contacts.. 1 at each end, so there is continuity all the time.
>This has been a mystery to me...... any electrical engineers out there?
>Peter C
>At 10:25 AM 5/27/99 , Herb_Goede@amsinc.com wrote:
>>>Depending on the year of your car this is how it works. The cone shaped
>>piece that mounts to the dash and fills in the space between the wheel and
>>the dash should have a brass contact ring to fit between it and the wheel.
>>The ring should have a wire connected to it. The wheel has a 3/8" hole
>>next to the mounting hole. A plastic and brass plunger fits in there and
>>rides against the brass ring. When you push the horn button it compresses
>>the plunger and completes the ground circuit and you get beep beep.
>>
>>Herb G.
>>
>
>
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