Date: Thu, 18 Nov 2010 06:50:49 -0800
Reply-To: mark drillock <mdrillock@COX.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: mark drillock <mdrillock@COX.NET>
Subject: Re: Turn signal indicator troubleshooting - blue wire
In-Reply-To: <591834.2563.qm@web110608.mail.gq1.yahoo.com>
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Looking back over some older posts by you it seems this is an 87 Westy
rather than just an 87? The Westy can have other things connected to the
blue wire circuit so if it is a Westy I would not expect that blue wire
test to show anything. Thanks for trying it anyway.
The older posts show you recently had the cluster apart to replace the
high beam indicator bulb. Some of us older guys realize we don't always
remember every little thing we did weeks or months ago so forgive us if
we assume this may be true of other people as well.
The TS LED indicator is powered on one leg at all times that the key is
turned on. It only lights when the TS or 4Way switches provide a ground
path on the other leg during the time that the flasher relay has blinked
the outer signals off between flashes. An LED only works when powered in
one direction. Since yours only lights when the key is off, the logical
assumption is that the power must be coming from a different path,
namely the other leg that is supposed to be the ground leg. Since that
leg won't light the led unless it is in backwards, we conclude a high
probability that your diode is in backwards.
Mark
Stephen Grisanti wrote:
> Blue wire detached from alternator and first two tests rerun with NO change.
>
> I reiterate that I have made no change--none, not ever--to the turn signal indicator LED/bulb so if it is installed with the polarity reversed, then for four years it has worked that way until just recently. Unless someone's been sneaking over to my house at night and messing with my instrument panel, that TSI is exactly as it has always been.
>
> So what's next, the bucket of steam? I'll try reversing polarity this weekend. I've heard that can be fun.
>
> Stephen
>
> --- On Tue, 11/16/10, mark drillock<mdrillock@cox.net> wrote:
>
> From: mark drillock<mdrillock@cox.net>
> Subject: Re: Turn signal indicator troubleshooting
> To: "Stephen Grisanti"<bike2vcu@YAHOO.COM>
> Cc: vanagon@GERRY.VANAGON.COM
> Date: Tuesday, November 16, 2010, 11:42 AM
>
> If you would be willing to do one more thing, try unhooking the small
> blue wire from the alternator and then run the first 2 test modes again.
>
> The TS indicator is a green led, the HB indicator is normally an
> incandescent bulb with a blue plastic cover. The bulb has no polarity
> but the led needs to be plugged in correctly.
>
> Mark
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