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Last Post: Steve9
Posted On: 8 Hours Ago
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15th October 2019
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Master Mechanic
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Join Date: Jul 2013
Location: north county
Posts: 290 Sportster/Buell Model: 1970 XLCH Sportster/Buell Year: 1970 Other Motorcycle Model: Ultra Classic Other Motorcycle Year: 2006
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I guess I did it right, thanks.
__________________
WORK TO RIDE, RIDE TO WORK
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15th October 2019
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Rider Of The Iron Steed
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Join Date: Dec 2003
Location: London, ON Canada
Posts: 32,521 Sportster/Buell Model: XLH Sportster/Buell Year: 1978
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I believe [but I do not know] that the CS gen that is polarised from the factory is the one that has the regulator attached; the other gen is not polarised from the factory.
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16th October 2019
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XL FORUM TEAM MEMBER
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Join Date: Jul 2008
Posts: 10,212 Sportster/Buell Model: 1200s Sportster/Buell Year: 2001 Sportster/Buell Model #2: xlch Sportster/Buell Year #2: 1974
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electronic regulators really do not need polarizing.
with electro-magnetic coupling, current flow can go both ways and if not correct, the coils work in reverse which causes the regulator points to burn out and usually the shunt resistor on the back.
electronic has diode blocking and no magnetic coupling. when it is powered on, current flows only in one direction and that direction is correct to polarize the shoes.
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19th October 2019
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Biker
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Join Date: May 2016
Posts: 17 Sportster/Buell Model: xlch Sportster/Buell Year: 1971
Reputation: 10

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Hey all, Doc suggested I hook up a light for the generator to help with the diagnosis.
In short, when the bike motors off but theres power the lights strong and steady.
I filmed it when running/idling though and this is what happens...
https://www.youtube.com/watch?v=EVZmSCFlffY
Im pretty sure the light shouldn't be on, this dosent make things any clearer for me but might mean something to someone else.
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19th October 2019
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Rider Of The Iron Steed
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Join Date: Dec 2003
Location: London, ON Canada
Posts: 32,521 Sportster/Buell Model: XLH Sportster/Buell Year: 1978
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I cannot see clearly where the wires are connected. Perhaps you could give a verbal description.
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19th October 2019
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Biker
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Join Date: May 2016
Posts: 17 Sportster/Buell Model: xlch Sportster/Buell Year: 1971
Reputation: 10

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Quote:
Originally Posted by IronMick
I cannot see clearly where the wires are connected. Perhaps you could give a verbal description.
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the ground is wired to the 'L' terminal on the generator and the positive is connected to the same terminal on the ignition switch as my headlight.
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20th October 2019
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Biker
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Join Date: May 2016
Posts: 17 Sportster/Buell Model: xlch Sportster/Buell Year: 1971
Reputation: 10

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I’m kinda out of any further ideas as nothing seems to be working. I figured all that’s left to do is post my wiring diagram in the hope that I may have overlooked something here...
image upload
Key:
HL: headlight
TL: taillight
JB: junction box (this is the channel with terminals on it that is part of the frame)
BS: brake switch
SP: spark plugs
P: points
CB: circuit breaker
B: b terminal on CE dgv5000
Failing this I’m going to take it to an auto electrician.
Hopefully I won’t have to send the gen/reg back and that’s going to be an absolute nightmare!
Last edited by Seeny; 20th October 2019 at 03:37..
Reason: Image upload issues
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20th October 2019
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Biker
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Join Date: Jul 2018
Posts: 84 Sportster/Buell Model: xlch Sportster/Buell Year: 1966
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Question, does you switch have both an acc, and an ignition post?
Sent from my iPhone using Tapatalk
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20th October 2019
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Biker
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Join Date: May 2016
Posts: 17 Sportster/Buell Model: xlch Sportster/Buell Year: 1971
Reputation: 10

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Yeah there are 3 posts, battery, igntion and acc.
I can take a photo if that helps...
Quote:
Originally Posted by Medyo Bastos
Question, does you switch have both an acc, and an ignition post?
Sent from my iPhone using Tapatalk
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20th October 2019
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Biker
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Join Date: May 2016
Posts: 17 Sportster/Buell Model: xlch Sportster/Buell Year: 1971
Reputation: 10

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Some interesting observation today. Where I thought I had blown my recent taillight bulb on the ride last weekend, it turns out that it hasent actually blown (yet) but in fact its actually reacting to the voltage much like the generator light that I have just hooked up. On idle the taillight is flickering (very unstable and dim) but under load its going out completely.
Just to confirm this is whats happening with the generator light as well. Its flickering very low on idle but then goes out under load...
This to me makes me think that the generator/reg are doing their job?? I'm probably wrong.
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