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Charging system ground question

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Old Oct 20, 2018 | 07:00 PM
  #1  
Chris Sigo's Avatar
Chris Sigo
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From: Olympia, WA
Default Charging system ground question

My ‘75 has a brand new battery and regulator, getting plenty of juice from the alternator, and 13.5-14.5 DCV to the end of the regulator wire.

The problem is that when conected to the battery, it shows little to no charge going in. The battery reads about 12.5 and doesn’t increase at all with throttle.

I replaced the regulator from another brand new one just in case. Battery load tests well. Stator is not grounding out (per manual procedure), and putting out 50+ ACV at idle and increases with throttle.

Bike otherwise runs great. I’ve checked all grounds and haven’t found a single problem.

could something in the wiring setup cause the juice from the regulator to bleed off and not fill the battery?

Running basic wire setup through circuit breaker. 3 position key switch. reregulator straight to battery positive. Thanks.

This is the current harness setup.


 

Last edited by Chris Sigo; Oct 20, 2018 at 08:21 PM. Reason: Adding photo
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Old Oct 20, 2018 | 09:44 PM
  #2  
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Racepres
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From: Cental, MI
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Unloaded.. ie unhooked from battery... means about nothing... The regulator Must put out Juice under load... Battery
Betting a New Regulator cures yer woes... Unless your procedure is amiss... or I misunderstand your method...
 
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Old Oct 20, 2018 | 11:13 PM
  #3  
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Hurricane 68
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From: Sparks Nevada
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All I can say is make sure regulator ground is solid also there should be added grounding tab on under side regulator run heavy gauge wire direct to motor ground. If no success regulator bad. Good luck.
 
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Old Oct 21, 2018 | 12:21 PM
  #4  
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johnjzjz
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From: la la land jerzey
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add a ground wire to it when its not working to the regulator and the battery see what happens
 
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Old Oct 21, 2018 | 03:43 PM
  #5  
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Baird
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Unless you have something connected that is really loading it down or a bad ground, regulator is bad, replace.
 
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