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 <mailto: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> <mailto: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 .
>>>>
>>>>
>