Date:         Mon, 15 Nov 2010 11:20:26 -0500
Reply-To:     David Beierl <dbeierl@ATTGLOBAL.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <dbeierl@ATTGLOBAL.NET>
Subject:      Re: turn signal indicator weirdness
Comments: To: Stephen Grisanti <bike2vcu@YAHOO.COM>
In-Reply-To:  <551923.89925.qm@web110609.mail.gq1.yahoo.com>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 06:06 AM 11/15/2010  -0800, Stephen Grisanti wrote:
>I honestly can't recall if before the failure the bulb did actually
>work for the four-ways, but it does now in addition to the four-way
>switch lighting up.  Interestingly, the bulb lights for the four-way
>when the key is off but not when the key is on.  Turn signals, of
>course, only work with the key on but the bulb does not work for
>them.  Signal lights at all four corners work when they're supposed
>to for both the flashers and the signals.  What gives?

Normal operation -- panel light flashes for 4-ways if key on, not if
key off.  I'm having great trouble believing it's the other way
around on yours.

But I'm also mystified so far about the light fail with the turn
signals.  Reason being that the light circuit works like this:  The
panel gets +12 whenever the key is on (except the clock which is
always powered).  The LED is hooked to the panel power and its other
end goes to the 49a (output) terminal of the flasher relay.  When the
relay closes that line is supplied with +12 -- whether it comes from
the 30 (unswitched) line or the 15 (switched) depends on the 4-way
switch.  Either way, when the relay is closed the light sees +12 on
both ends and is dark.

When the relay opens, the light sees one of three things:  All
switches off, it floats, hooked to nothing.  Turn signal switch on,
it goes to ground through one or the other pair of signal
lights.  4-way on, it goes to ground through both pairs of signal
lights.  Either way it lights up.

The snag is that both these arrangements use the same set of
wires.  So far I simply can't see a way for it to work with the
4-ways and not with the turn signals -- UNLESS the turn signals
aren't working, in which case we're looking at the turn stalk and
associated wiring.

Mark, what am I missing?  I looked at the '83 and the '89 diagram and
they're functionally the same.

Yours,
d