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81 GS750L Voltages
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81 GS750L Voltages
Can anyone tell me what the voltage should be with bike running around 5000rpm with headlight on and off. Mine is charging with light off @ 14.4v when light is turned on voltage drops to 13.5v then if I turn on my spot lights it drops to 12.4v. which doesn't seem to be high enough to keep battery charged. I have replaced the stator and regulator/rectifier. Or is there a heavy duty stator available that produces more power?Tags: None
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billko3333
I used the stator papers from this web site and found both stator and R/R to be bad. I replaced them with a new aftermarket stator and new aftermarket R/R both are supposedly OEM replacements. But why would voltage at battery drop close to 1 volt by just turning on the stock headlight? I understand this bike has a day and night charging system. Is it possible it is a wiring issue in the night part of the system? Or maybe a weak battery? The spot lights are H1 35 watt bulbs and provide great lighting. I really would hate to change them. They work fine on my 97 Honda Shadow so I got the same ones for this bike.
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Originally posted by billko3333 View PostI used the stator papers from this web site and found both stator and R/R to be bad. I replaced them with a new aftermarket stator and new aftermarket R/R both are supposedly OEM replacements. But why would voltage at battery drop close to 1 volt by just turning on the stock headlight? I understand this bike has a day and night charging system. Is it possible it is a wiring issue in the night part of the system? Or maybe a weak battery? The spot lights are H1 35 watt bulbs and provide great lighting. I really would hate to change them. They work fine on my 97 Honda Shadow so I got the same ones for this bike.
Also based on your OEM replacement selections for R/R you did not read GS Stator also in my signature.
The only big mysteries are what you did not how the system works.
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Forum LongTimerGSResource Superstar
Past Site Supporter
Super Site Supporter- Mar 2006
- 35542
- Torrance, CA
Yes, do the Quick Test. Also, rewire the charging system so the stator feeds directly into the R/R, otherwise your harness could melt down.Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection
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