The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > Ironhead Sportster Motorcycle Talk (1957-1985)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

Active Threads
14 Firearms you wish you owned.
Last Post: Stairman
Posted On: 3 Minutes Ago
Replies: 648
Views: 160,213
0 83 XLH w/Velorex 562
Last Post: Serious Blac
Posted On: 23 Minutes Ago
Replies: 22
Views: 1,342
0 1250 Unhappiness 2020 edition
Last Post: xLoneRiderx
Posted On: 31 Minutes Ago
Replies: 73
Views: 3,697
0 This is gonna hurt.
Last Post: BKB
Posted On: 42 Minutes Ago
Replies: 8,296
Views: 1,817,833
0 XLh 883 cylinder heads
Last Post: John Harper
Posted On: 48 Minutes Ago
Replies: 1
Views: 78
2 WOW, This cracked? Wtf?
Last Post: ReddTigger
Posted On: 54 Minutes Ago
Replies: 10
Views: 240
0 Frame swaps
Last Post: 45Brit
Posted On: 1 Hour Ago
Replies: 9
Views: 819
0 Chinese S&S carbs
Last Post: Serious Blac
Posted On: 1 Hour Ago
Replies: 230
Views: 19,920
0 Keep & Kill
Last Post: Crusty
Posted On: 1 Hour Ago
Replies: 20,319
Views: 1,208,752
0 Corona Virus
Last Post: NLXL
Posted On: 1 Hour Ago
Replies: 1,245
Views: 123,011
0 Hottie of the day, no nudity.
Last Post: Stairman
Posted On: 1 Hour Ago
Replies: 27,227
Views: 2,827,689
0 Sidehack for XLS
Last Post: ryder rick
Posted On: 1 Hour Ago
Replies: 36
Views: 2,211
0 Ironhead clutch cable
Last Post: Freewheeler
Posted On: 1 Hour Ago
Replies: 0
Views: 17
0 Hot Chicks on Hot Bikes
Last Post: Stairman
Posted On: 2 Hours Ago
Replies: 11,704
Views: 2,435,820
0 Sportsters No More?
Last Post: AZbiker
Posted On: 2 Hours Ago
Replies: 17
Views: 673
0 Mikuni HSR42 will not idle
Last Post: rocketmangb
Posted On: 2 Hours Ago
Replies: 15
Views: 703
0 1998 883 Not Charging
Last Post: gary59
Posted On: 3 Hours Ago
Replies: 2
Views: 59
0 One cylinder working ...
Last Post: Bert fegg
Posted On: 3 Hours Ago
Replies: 16
Views: 305
0 Transmission Sprocket
Last Post: The Doctor71
Posted On: 3 Hours Ago
Replies: 2
Views: 63
4 Snow a week ago, now a Tornado Watch
Last Post: DK Custom
Posted On: 3 Hours Ago
Replies: 3
Views: 105
0 Brad's 1995 883 Hugger
Last Post: Brad
Posted On: 3 Hours Ago
Replies: 13
Views: 1,182
0 2021 2nd. Annual Midwest M&G
Last Post: Bow only
Posted On: 4 Hours Ago
Replies: 97
Views: 7,361
0 0Salt Flat Sporton
Last Post: thecarfarmer
Posted On: 4 Hours Ago
Replies: 46
Views: 1,692
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 4 Hours Ago
Replies: 49,879
Views: 8,150,219
0 Ultima Ignition Issues
Last Post: cbolden2
Posted On: 5 Hours Ago
Replies: 21
Views: 1,111
0 Fixing or replacing primary cover for a 1975 xlh?
Last Post: Jberg93
Posted On: 5 Hours Ago
Replies: 0
Views: 54
0 07 883 Low .... lifting
Last Post: npaisnel
Posted On: 6 Hours Ago
Replies: 1
Views: 50
0 Lets see your off season builds
Last Post: cycowrencher
Posted On: 7 Hours Ago
Replies: 1,611
Views: 236,612
0 Hard to find Neutral
Last Post: ThenCameHarry
Posted On: 9 Hours Ago
Replies: 14
Views: 582
0 WTB - 95 mid control shift arm
Last Post: IXL2Relax
Posted On: 9 Hours Ago
Replies: 1
Views: 91
More...
Members Birthdays
GRAYFEATHER (71), vonriken (70), The Crusher (63), madisonlink (60), hillbilly (59), mardyk (56), Blade (54), dmraco (51), jmcclure (44), Ryand36330 (43), nrrs (43), CRB1006 (33), Yoitsjustin1 (21)
Reply
 
Share Thread Tools Display Modes
  #1  
Old 4 Weeks Ago
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 8,271
Sportster/Buell Model: Sportster 883►1200
Sportster/Buell Year: 1994
IXL2Relax has disabled reputation
Default L84-85 Dangerous Stock Wiring?

Below is what I wrote in the Sportsterpedia regarding the regulator output wiring for the Late84 & 1985 models.

Perhaps those owners with these models can check to verify whether the bikes themselves ARE wired from the factory as the FSM wiring diagrams indicate.

Please post up what you find...


===================================

http://sportsterpedia.com/doku.php/t...t_be_dangerous

L1984-1985 Wiring Issue - Might Be Dangerous

Note: The L84-85 Wiring Diagrams show an improper connection from the Regulator to the Battery.

The wiring diagram shows an unsafe connection but we have not been able to determine if the actual bikes are wired wrongly that matches the diagrams. So the following information needs to be verified against the actual bike wiring.

The Main Circuit Breaker is supposed to protect the wiring from a shorted battery. If the regulator is connected directly to the battery (as shown on the diagrams), not utilizing the main circuit breaker for protection, there is a potentially dangerous situation. If the regulator internally or externally shorts that wire, connected to the battery, to ground, the battery will supply upto 200 amps of current, causing the wire to overheat and possibly creating a fire. This is what the Main Circuit breaker is to prevent.

So, the proper way to connect the output of the voltage regulator to the system is at the output side of the Main Circuit Breaker (typically, on the Silver Stud). The battery would be connected to the Main Circuit Breaker on the Brass Stud.

This is the way earlier & later model wiring diagrams show the connection of the voltage regulator to the circuit breakers. The L84-85 diagrams are the only ones showing this improper, potentially dangerous, wiring.

If you find that your bike is improperly wired, matching the diagrams, PLEASE, rewire your bike to make it safe. Be sure the output wire of the voltage regulator is connected to the output side of the Main Circuit Breaker (typically, on the Silver Stud).


IXL _______ >>>> My Motorcycle Chronicles Are Here <<<<
For FREE Sportster Tech Info from the XLForum:
Explore The Sportsterpedia - An XLForum Information Resource!
__________________
### The ride is more enjoyable to nowhere in particular! ###
Reply With Quote
  #2  
Old 4 Weeks Ago
decman decman is offline
Post no Avatars!
 
Join Date: Jan 2005
Location: Dubois, WY
Posts: 4,025
Sportster/Buell Model: 1200S
Sportster/Buell Year: 2001
Sportster/Buell Model #2: XLH-883D
Sportster/Buell Year #2: 1988
Other Motorcycle Model: FXDXT
Other Motorcycle Year: 2001
Reputation: 3902665
decman has a reputation beyond reputedecman has a reputation beyond reputedecman has a reputation beyond reputedecman has a reputation beyond reputedecman has a reputation beyond reputedecman has a reputation beyond reputedecman has a reputation beyond reputedecman has a reputation beyond reputedecman has a reputation beyond reputedecman has a reputation beyond reputedecman has a reputation beyond repute
Default

I've worked on a bunch of the old Harleys and I've seen that many times.
I wonder if they were using fusible links instead?
Reply With Quote
  #3  
Old 4 Weeks Ago
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 8,271
Sportster/Buell Model: Sportster 883►1200
Sportster/Buell Year: 1994
IXL2Relax has disabled reputation
Default

Thanks Decman for your thoughts...

The wiring diagrams for at least the 79-E84 show a Main Circuit Breaker and ONLY THE BATTERY is on the incoming side of that breaker, which is the proper wiring. They also show the Regulator connected on the output side of the Main Circuit Breaker.

The Fuse Wire Bulletin (SB#659 - http://sportsterpedia.com/lib/exe/fe...in:tsb0659.pdf) shows even the Fusible Link in the right place between the Battery & the Regulator connection.

The wiring diagrams for EVOs, 86-up, show the Regulator connected on the output side of the Main Circuit Breaker (and, later, MaxiFuse).

It is only these Late84-85 wiring diagrams that show the improper wiring. I can't believe the FACTORY would go back to using a Fusible Link at the battery when the Main Circuit Breaker is also there & it's only a matter of connecting to it properly.

I'm guessing that the diagram is wrong as this was the first year of the alternator and required the diagram to be modified because of that. I think the factory wired it correctly but the updated diagram showed the connection at the wrong place. That's what I'm trying to confirm.

Because so many bikes (especially the Ironheads) have had the wiring modified (either deliberately or simply by accident while making repairs or modifications) it is hard to find this answer unless you have a truly UNMOLESTED model of those years. For those who don't understand this issue (and its dangers), I can image that putting the wiring back improperly (maybe for convenience) was easy to do.

Decman (or anyone else) - Have you seen this improper wiring on an UNMOLESTED Ironhead of those specific years?


IXL _______ >>>> My Motorcycle Chronicles Are Here <<<<
For FREE Sportster Tech Info from the XLForum:
Explore The Sportsterpedia - An XLForum Information Resource!

Last edited by IXL2Relax; 4 Weeks Ago at 08:50..
Reply With Quote
  #4  
Old 3 Weeks Ago
IXL2Relax's Avatar
IXL2Relax IXL2Relax is offline
XL FORUM TEAM MEMBER
 
Join Date: Feb 2013
Location: Let Freedom Ring in PA
Posts: 8,271
Sportster/Buell Model: Sportster 883►1200
Sportster/Buell Year: 1994
IXL2Relax has disabled reputation
Default

I would appreciate someone with a 1985 that still has the stock wiring letting us know which way the MoCo wired the Regulator...

TIA

IXL _______ >>>> My Motorcycle Chronicles Are Here <<<<
For FREE Sportster Tech Info from the XLForum:
Explore The Sportsterpedia - An XLForum Information Resource!
Reply With Quote
Reply

Bookmarks


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

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



All times are GMT +1. The time now is 20:15.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC