www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You




Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIII-A3/B4 TDIs

VW MKIII-A3/B4 TDIs This is a discussion about MKIII-A3/MkIII Jetta/Golf (<99.5) and B4 Passats (96,97) TDI's. Non TDI related postings will be moved or removed.

Reply
 
Thread Tools
Old October 31st, 2018, 19:33   #16
Vince Waldon
Veteran Member
 
Vince Waldon's Avatar
 
Join Date: Apr 2009
Location: Edmonton Alberta Canada
Default

Jeebus, there's no "polarity" to an incandescent light .

The bulb socket in its plastic housing doesn't care, the filament doesn't care, the electrons could not care less which terminal they flow into or out of, and the engineers that designed it in the early 90s (actually more like the 70's or 80's) were not worried about it either.

Nor did they have future vision that several decades later there's be a mad rush to jam LEDs in there.
__________________
Vince Waldon Edmonton AB Canada

Note: The above is to the best of my knowledge- but at the end of the day simply interweb opinion, worth EXACTLY what you paid for it, and if used done so at your own risk.
Vince Waldon is offline   Reply With Quote
Old November 1st, 2018, 17:36   #17
GoFaster
Moderator at Large
 
Join Date: Jun 1999
Location: Brampton, Ontario, Canada
Default

Quote:
Originally Posted by Vince Waldon View Post
Jeebus, there's no "polarity" to an incandescent light .
The bulb socket in its plastic housing doesn't care, the filament doesn't care, the electrons could not care less which terminal they flow into or out of, and the engineers that designed it in the early 90s (actually more like the 70's or 80's) were not worried about it either.
Nor did they have future vision that several decades later there's be a mad rush to jam LEDs in there.
True, but by convention, the easily touched with a finger outer shell of the socket is ground/common, and the harder to touch, buried inside center pin is switched hot/positive.

It doesn't matter so much for 12 volt circuits (which don't present much of a shock hazard), but it matters a lot for 120v AC circuits which represent a more significant shock hazard. The easily touched outer shell is on the "common" (which is grounded at the distribution panel thus not presenting a shock hazard), the hot inner pin is more protected.

That carried over to 12 volt circuits by convention.
__________________
Brian P.
formerly ... 2006 Jetta TDI 5-sp, Spice Red, Unitronics stage 1, 0.681 5th gear.
and before that ... 1996 Passat TDI, Silk Blue
GoFaster is offline   Reply With Quote
Old November 1st, 2018, 18:01   #18
Chris_TDI_98
Veteran Member
 
Join Date: Jul 2012
Location: Hartford, CT
Fuel Economy: 35 mpg with leaking injection pump
Default

I called my local VW dealer, service manager.
He said, Heck no, no reverse polarity, that would be nuts, the outer shell contacts of the rear end bulbs should be negative ground, just like the rest of the car. He then admitted that multiple standards exist for example he tried replacing bulbs in his VW and got the bad luck of a slightly different bulb number which reversed the position of high beam and low beam contacts on the base of dual filament bulbs, so he ordered another set from a different manufacturer and they worked. But obviously he was referring to filaments which are unaffected by reverse polarity.
Chris_TDI_98 is offline   Reply With Quote
Old November 2nd, 2018, 15:40   #19
Digital Corpus
Veteran Member
 
Digital Corpus's Avatar
 
Join Date: Mar 2008
Location: Ontario, California
Default

No need for cutting and splicing. Just swap the pins in the terminal that are providing power…
__________________
Turbo Upgrade | Engine Rebuild | Photos | Lighting Mods
Dyno Graphs | 4-Bar sensor | GTB1756VK | Hot-swappable 2.5" down pipe | R520's | PD130 intake manifold
Digital Corpus is offline   Reply With Quote
Old November 4th, 2018, 08:35   #20
Chris_TDI_98
Veteran Member
 
Join Date: Jul 2012
Location: Hartford, CT
Fuel Economy: 35 mpg with leaking injection pump
Default

I suspect, and will verify today, that the Mexico VW mk3 factory assembly line tech who originally connected the tail light trunk wiring harness to the fuse relay panel on this car, he/she connected these power wires in reverse polarity, yet the reverse polarity mistake went undetected because the filament tail lights still powered on OK while running reverse polarity!
In my opinion this is the simplest and therefore most plausible explanation for this wiring error which has gone undetected until now.
Except for the presence of excessive RF noise on the battery power lines both while the car is off and while it’s running, which are supposed to be 100% clean DC battety power.
Chris_TDI_98 is offline   Reply With Quote
Old November 4th, 2018, 08:43   #21
ToddA1
Veteran Member
 
Join Date: Aug 2011
Location: NJ 08002
Fuel Economy: Dismal
Default

Dude, stop overthinking and over complicating things. Swap the wires and be done with it.

-Todd
__________________
'96 B4V: Kerma tune and PP520s
'97 B4: Stock
Rabbit build
ToddA1 is offline   Reply With Quote
Old November 4th, 2018, 08:48   #22
Chris_TDI_98
Veteran Member
 
Join Date: Jul 2012
Location: Hartford, CT
Fuel Economy: 35 mpg with leaking injection pump
Thumbs up

Quote:
Originally Posted by ToddA1 View Post
Dude, stop overthinking and over complicating things. Swap the wires and be done with it.
Of course. Ill swap the wires one time on the fuse panel and keep the right wire color code vs 4x on the rear wiring plugs and mess up the wire color code.
Chris_TDI_98 is offline   Reply With Quote
Old November 4th, 2018, 15:24   #23
RoseBud68
Veteran Member
 
Join Date: Dec 2016
Location: PSL FL
Default

Quote:
Originally Posted by todda1 View Post
dude, stop overthinking and over complicating things. Swap the wires and be done with it.

-todd
lol....
__________________
1999 MK3 Jetta TDI 1Z.
RoseBud68 is offline   Reply With Quote
Old November 5th, 2018, 05:47   #24
Mongler98
Veteran Member
 
Join Date: Mar 2011
Location: Northern MD
Fuel Economy: Race: 12mpg, Gandma:65mpg
Default

Quote:
Originally Posted by Vince Waldon View Post
Jeebus, there's no "polarity" to an incandescent light .
The bulb socket in its plastic housing doesn't care, the filament doesn't care, the electrons could not care less which terminal they flow into or out of, and the engineers that designed it in the early 90s (actually more like the 70's or 80's) were not worried about it either.
Nor did they have future vision that several decades later there's be a mad rush to jam LEDs in there.
You are forgetting that this fact is completely dependent on what brand of blinker fluid you use!
Mongler98 is offline   Reply With Quote
Old November 5th, 2018, 14:16   #25
turbodieseldyke
Veteran Member
 
turbodieseldyke's Avatar
 
Join Date: Jun 2010
Location: Free Mustache Rides
TDI(s): 98 jetta
Fuel Economy: 50
Default

Quote:
Originally Posted by ToddA1 View Post
Dude
+1. But hey, at least he didn't make this thread a poll.


I personally hate driving behind anyone with LED taillights, at night. Prius and Cadillac are especially bad, almost blindingly bright.
turbodieseldyke is offline   Reply With Quote
Old November 5th, 2018, 16:42   #26
Mongler98
Veteran Member
 
Join Date: Mar 2011
Location: Northern MD
Fuel Economy: Race: 12mpg, Gandma:65mpg
Default

Quote:
Originally Posted by turbodieseldyke View Post
+1. But hey, at least he didn't make this thread a poll.
I personally hate driving behind anyone with LED taillights, at night. Prius and Cadillac are especially bad, almost blindingly bright.
ever get behind an ambulance or firetruck, >9,999 lumens of red light in your face!
Mongler98 is offline   Reply With Quote
Old November 5th, 2018, 19:50   #27
Digital Corpus
Veteran Member
 
Digital Corpus's Avatar
 
Join Date: Mar 2008
Location: Ontario, California
Default

It’s because most of those LEDs don’t have an even 360 spread but instead cover a 30 to 60 cone. For practicality, lux is a better unit over lumens.
__________________
Turbo Upgrade | Engine Rebuild | Photos | Lighting Mods
Dyno Graphs | 4-Bar sensor | GTB1756VK | Hot-swappable 2.5" down pipe | R520's | PD130 intake manifold
Digital Corpus is offline   Reply With Quote
Old November 7th, 2018, 23:44   #28
turbodieseldyke
Veteran Member
 
turbodieseldyke's Avatar
 
Join Date: Jun 2010
Location: Free Mustache Rides
TDI(s): 98 jetta
Fuel Economy: 50
Default

Quote:
Originally Posted by Mongler98 View Post
ever get behind an ambulance or firetruck, >9,999 lumens of red light in your face!
Never noticed, as I'm one of those crazy people who pulls over to the right, waits for them to pass, and follows behind a couple hundred feet back.
turbodieseldyke is offline   Reply With Quote
Old November 8th, 2018, 05:37   #29
Mongler98
Veteran Member
 
Join Date: Mar 2011
Location: Northern MD
Fuel Economy: Race: 12mpg, Gandma:65mpg
Default

Quote:
Originally Posted by turbodieseldyke View Post
Never noticed, as I'm one of those crazy people who pulls over to the right, waits for them to pass, and follows behind a couple hundred feet back.
NO, not the siren lights and what not, there are plenty of times an ambulance and or fire truck is not in an emergency to get somewhere (usualy back to base), you don't get over unless the sirens are going.
I love about 7 miles from a hospital and its very common to be behind one. those tail lights are like the arc of the covenant bright, my face feels like its melting!
Mongler98 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
No reverse lights brownnugen VW MKIII-A3/B4 TDIs 8 October 27th, 2016 16:27
No reverse lights Herm TDI VW MKIV-A4 TDIs (VE and PD) 15 December 5th, 2013 08:59
Reverse Lights desgre90 VW MKVI-A6 Jetta Sedan (~ 2011+) 8 March 28th, 2013 19:39
Reverse Lights wildkitty Ontario 13 September 22nd, 2008 07:34
No Reverse Lights Help! jblythe TDI 101 4 December 3rd, 2006 21:15


All times are GMT -7. The time now is 01:45.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2017, All Rights Reserved
Page generated in 0.16433 seconds with 11 queries
[Output: 124.96 Kb. compressed to 105.26 Kb. by saving 19.70 Kb. (15.77%)]