Horn - should it have continuity?

Brett Dikeman brett.dikeman at gmail.com
Mon Feb 8 09:18:20 PST 2010


On Sun, Feb 7, 2010 at 5:53 PM, Radek <radek at istar.ca> wrote:

> OK, so to check if the horn is shorted (that's what I'm really after), what should I measure?  It is honking,
> BTW and is not on the car.  When I connect it to to a battery, lots of spark is created.
> The wire I touch to the battery terminal seems to burn a little hole in the terminal.

It's a relatively high-current, inductive load, which is why you get
the sparking both on connection and disconnect.  Flyback is what you
get when you disconnect an inductive load; it's a big spike of current
in the opposite direction.

In some cars, the horn is relayed...

-B


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