[Roadsters] Datsun horn repair

[Gary and Cindy Ault]

Larry,

What he said.

I took one of these horns apart as forensic exercise, and found an open 
circuit on the hot lead on the horn housing.  I had to make a new insulator 
after I drilled out the terminal mounting, but, when I was done, I had an 
operable horn.

(I had bought a pair on eBay for a friend, and this was one of his old 
ones.)

Gary

----- Original Message ----- 
From: "GraemeS" <graemes at internode.on.net>
To: "Roadster List" <datsun-roadsters at autox.team.net>; 
<lmflaming at comcast.net>
Sent: Saturday, October 30, 2010 1:44 AM
Subject: Re: [Roadsters] Datsun horn repair


> What exactly is wrong with the horns?
> If they just don't honk all they may need is a little adjusting.
> Most horns have a small screw adjustment on them some where which
> moves the breaker points inside the horn to vary the sound.
> Over the years the points tend to burn and tarnish and become high
> resistance.
> Check each horn for continuity to ground and you'll probably see a
> very high resistance.
> Bear in mind there is a resistor in parallel with the horn coil to
> provide a rudimentary spark quench circuit to the points so even
> though you might read continuity it may not be the electromagnetic
> coil.
> If the coil still refuses to function, you can dissemble the horn and
> clean the contacts to get everything working again.
> Not a real hard jobby.
> You'll need to make up some new gaskets for the diaphragm but that's
> about all.
>
> Regards,
> Graeme S.
>
> On Sat 30/10/10 15:41 , lmflaming at comcast.net sent:
> Does anyone know who repairs horns? Both of them on my 60 roadster
> need
> repairing. They are MIYAMOTOB MODEL-SS 12 VOLT 5.5 AMP. Maybe someone
> knows
> ofB left and right horns for sale somewhere?B
>
> Larry
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