

| Subject: | Re: Help me diagnose and fix no brake lights |
| From: | Jim Felder |
| Date: | Fri, 9 Oct 2015 22:52:54 +0000 |
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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