Date: Fri, 9 Oct 2015 22:52:54 +0000
Reply-To: Jim Felder <jim.felder@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jim Felder <jim.felder@GMAIL.COM>
Subject: Re: Help me diagnose and fix no brake lights
In-Reply-To: <5618447F.7090500@turbovans.com>
Content-Type: text/plain; charset=UTF-8
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 .
>>
>>
>>
>>
>>
>
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