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> 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 . >>> >>> |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.