'94 850 Horn Ground wire

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trent - 01 May 2007 18:23 GMT

I have a 1994 850 whose horn would not stop blowing last night. I
pulled over and took out the fuse as a temporary fix, unfortunately it
seems that fuse also goes to the windshield wipers. After speaking
with a friend he suggested I disconnect the ground wire for the horn
to make it stop so I can use my windshield wipers. Problem is that
friend could not tell me where the wire is, any insight? I just need
a temporary fix until my car goes in for scheduled maintenance
(timing belt, cv joints) at the end of the month. Seeing that I am in
Chicago, it could rain any second so I need those wipers...

Trent

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Jarkka - 02 May 2007 13:09 GMT

>I have a 1994 850 whose horn would not stop blowing last night. I
>pulled over and took out the fuse as a temporary fix, unfortunately it
[quoted text clipped - 7 lines]
>
>Trent

Just pull out the connectors from each horn.

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Mike F - 02 May 2007 14:11 GMT

> >I have a 1994 850 whose horn would not stop blowing last night. I
> >pulled over and took out the fuse as a temporary fix, unfortunately it
[quoted text clipped - 9 lines]
>
> Just pull out the connectors from each horn.

Right. The horn is wired so that it always gets power (when the
ignition is on) and is grounded by the switch on the steering wheel.
There is a common problem on 850s where the insulator where this wire is
protected from grounding on the hub of the steering wheel breaks,
causing the horn to blow all the time. This 10 cent part is not
available separately, the approved Volvo fix is a new steering wheel!
Of course, an enterprising DIYer can fix this.

Signature

Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)

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Mark from Geneva - 02 May 2007 22:01 GMT

> > >I have a 1994 850 whose horn would not stop blowing last night. I
> > >pulled over and took out the fuse as a temporary fix, unfortunately it
[quoted text clipped - 26 lines]
>
> - Show quoted text -

You can get a kit from ipduse (http://www.ipdusa.com/Volvo-850/
Electrical/Horn-Repair-Kit/p-72-154-548/) which has the plastic
washers and contacts as well as a DVD showing how to replace it. I
agree that the parts aren't worth the $69 that they charge, but the
DVD was helpful so unless you can get the parts elsewhere, it may be
worth the $69 to get the video.

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Glenn Klein - 06 May 2007 01:37 GMT

>>>> I have a 1994 850 whose horn would not stop blowing last night. I
>>>> pulled over and took out the fuse as a temporary fix, unfortunately it
[quoted text clipped - 30 lines]
> DVD was helpful so unless you can get the parts elsewhere, it may be
> worth the $69 to get the video.

4 Screws needed Volvo Part #9157407-9 Reference Service Bulletin #
64-802 if you can not get a copy I will post 1@ you send it or if anyone
else needs a copy post back & I will post a link
Glenn

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" Anyone who has never made a mistake has never tried anything new"
-- Albert Einstein

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