Date:         Fri, 9 Oct 2015 18:21:07 -0500
Reply-To:     Jack Botts <johnnyjewel43@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jack Botts <johnnyjewel43@HOTMAIL.COM>
Subject:      Re: Help me diagnose and fix no brake lights
In-Reply-To:  <CAFnDXk0CODYJDPb4WTSxMX6RBdqEGmXYogX7Fb4JjqWbzJUkEw@mail.gmail.com>
Content-Type: text/plain; charset="Windows-1252"

Thanks, Jim. I am going to start saying "the googles". My kids & grandkids need another reason to dis the old man. Hey, I used "dis"; maybe I'm not as decrepit as I thought!

Jack Botts
Columbia, MO
'86 Vanagon Westfalia Weekender
'14 Passat SE TDI

> Date: Fri, 9 Oct 2015 22:52:54 +0000
> From: jim.felder@GMAIL.COM
> Subject: Re: Help me diagnose and fix no brake lights
> To: vanagon@GERRY.VANAGON.COM
> 
> I have the googles, but have spent the day actually fixing the issue. Not
> looking for DIN wiring standards directly, as I was occupied with a
> voltmeter and the wiring system before me. Interesting in retrospect,
> though. Thanks for the tip to use the googles.
> 
> Jim
> 
> On Fri, Oct 9, 2015 at 5:49 PM SDF ( aka ;jim lahey' - Scott ) <
> scottdaniel@turbovans.com> wrote:
> 
> > it was amazingly difficult to google
> >   " DIN wiring standards' or whatever I put.
> >
> > in all of 1.06 seconds this pops up ..
> >
> > http://www.bosch-automotive-tradition.com/media/en/automotive_tradition_1/teile_1/switches/downloads_3/klemmenbezeichnungen.pdf
> >
> > you maybe no have google ????
> > you could/should search yourself some ...about half a dozen interesting
> > things popped up ...all related to this topic.
> > More than that even.
> >
> >
> > S.
> >
> > On 10/9/2015 12:26 PM, Jim Felder wrote:
> >
> > Let us know if you find that list.
> >
> > Jim
> >
> > On Fri, Oct 9, 2015 at 5:25 PM SDF ( aka ;jim lahey' - Scott ) <
> > scottdaniel@turbovans.com> wrote:
> >
> >> that reminds me ..
> >> somewhere I found, online, a whole list of 'DIN' standards for wiring
> >> diagram symbols and such.
> >>
> >> this list also tells what numbers are used in terminal naming ..1 is
> >> always ground,
> >> 15 is always key on power,  etc. Very useful list.
> >>
> >> also that the very beginning of the electrical section of Bentley I think
> >> there's a list of symbols.
> >>
> >>
> >> On 10/9/2015 11:40 AM, Jim Felder wrote:
> >>
> >> Regarding scott's observation that it takes more pressure on the pedal than
> >> you think to operate the brake lights—I cut a 3/4 inch dowel that jams very
> >> tightly between the underside lower steering wheel and the brake pedal.
> >> It's there when you want it, not when you don't, and it puts considerable
> >> pressure on the system. Five minutes on full down is plenty enough to see
> >> if your connections are weeping brake fluid, another benefit.
> >>
> >> Also Scott's observation that the Bentley diagrams require a lot of study,
> >> that's true too. You need it right there as you look and look and look. It
> >> would help to know what all the symbols are, maybe that's in there but I
> >> didn't find it but ended up figuring it out.
> >>
> >> That 4-pin connector that red-black goes through that goes through the
> >> firewall--it has four wires coming in and its mate going to the under dash
> >> harness only has three wires. Go figure why they dead-ended that one wire.
> >>
> >> Jim
> >>
> >> On Fri, Oct 9, 2015 at 4:12 PM vw_van_fan_Mark <madvws@cox.net> <madvws@cox.net> wrote:
> >>
> >>
> >> Only 80-84 vans have the brake failure warning setup. These use 3 wire
> >> switches to supply the signals to the dash warning module and the rear
> >> brake lights. 85-91 vans use 2 wire switches, only for the rear brake
> >> lights.
> >>
> >> For some reason new switch quality seems low and the supply of new 2
> >> wire switches is even lower.
> >>
> >> Mark
> >>
> >>
> >> SDF ( aka ;jim lahey' - Scott ) wrote:
> >>
> >> re this brake warning light module K ...
> >> .................
> >>
> >> Obviously the swtiches , one or both I imagine, turn on the brake lights.
> >> the 'other function ' is for a legally required brake failure warning
> >>
> >> light
> >>
> >> in this system I'm pretty sure that if there is a significant difference
> >> in pressures between the two circuits
> >> ( like say a rear wheel cylinder is leaking badly ) ..
> >> the two brake light switches tell this info to the module ..
> >> the module sees 'no pressure in one side' compared to the other
> >> circuit.   thus turning on the warning light .
> >>
> >>
> >>
> >>
> >>
> >