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Headlight buzzers and starter solenoids

To: mgs@Autox.Team.Net (mgs)
Subject: Headlight buzzers and starter solenoids
From: todd@nutria.nrlssc.navy.mil (Todd Mullins)
Date: Tue, 22 Jul 1997 09:10:01 -0500 (CDT)
Trevor Boicey writes:

>   The buzzer will buzz whenever the headlights are
> on but the ignition is not. The trick would be to
> find a nice polite but firm buzzer that doesn't
> mind 12V.

Er, this seems a good spot to segue into the coda to my dashboard
installation story.

See, I had to remove the center console to install my dashboard, so I
took the opportunity to clean out a few dead leaves and old stereo
wires.  While I was in there, I noticed a little round black buzzer, and
decided to remove it too (since it never has done anything).  I figured
it was part of the stupid seat belt warning system.  It was connected to
a largish black box on the BACK side of the center support sheetmetal,
so I removed that too.

You may remember that I installed the dashboard just as Hurricane Danny
was headed our way.  Not surprisingly, it rained all day Friday, and it
just so happens that my starter solenoid has a history of sticking in
wet weather.  So when the twist of the key produced no starter action, I
naturally assumed it was due to the rain, and dutifully rolled the car
down the driveway for a nice push-start.  After a few more push-starts
on Friday, I had a chance to work on the starter solenoid on Saturday.
A bit of 3-in-1 on the solenoid plunger and I was ready to crank her up.
Nothing.  Still nothing.  Time to check the wiring diagram.

Well, some of you may be anticipating this, but it turns out that the
little black box I removed (I'm glad I threw it behind the seat and not
into the garbage can) is the control box for the sequential seat belt
warning system, and the starter solenoid is wired directly through it!
After replacing it, the starter dutifully spun when asked to, and my
problem was fixed.  At least I finally lubed the solenoid...

I say all of this to leave you with two things:

1.  Non Causa Pro Causa.  Cause and effect can sometimes be wickedly
    deceiving.

2.  There is a nice little 12V buzzer available to those of us with the
    stupid B(PS)L sequential seat belt warning systems (I KNOW none of
    you out there actually have functioning warning systems!).

-- 

Todd Mullins
Todd.Mullins@nrlssc.navy.mil    On the lovely Mississippi (USA) Coast

'74 MGB Tourer that needs a new battery

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