Hi all, at the end of last riding season I discovered my charging system on my '83 GS850 was not working. Over winter, with the help of the stator pages and a new Honda RR from Duaneage, I've replaced the stator and RR. I took multimeter to the bike today and am now worried the new changes are working too well. At idle with light, the battery reads 12.9v, at any rev 4000 rpms or more, it reads 16v to the battery. I'm worried this is too high. Thoughts?
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Yep, too high charging voltage. Look for problems around the R/R. Might be a wiring issue but could also be the R/R it self. Can you give more detail on how it's wired in?http://img633.imageshack.us/img633/811/douMvs.jpg
1980 GS1000GT (Daily rider with a 1983 1100G engine)
1998 Honda ST1100 (Daily long distance rider)
1982 GS850GLZ (Daily rider when the weather is crap)
Darn, with so many daily riders it's hard to decide which one to jump on next.;)
JTGS850GL aka Julius
GS Resource Greetings
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Probably the sense wire connection- so r/r does not "see"battery well. Connect the sense wire direct to battery positive and see if voltage levels off at about 14.5 maximum.1981 gs650L
"We are all born ignorant, but you have to work hard to stay stupid" Ben FranklinComment
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Here is a pic of the wiring. The stator is wired directly into the RR, grounded the green tab wire, connected the red wires and black wires into the harness.image1.jpgComment
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I realized I had the sense wire from the RR hooked up wrong. I hooked it up to the battery and got 14.5V. Where is the sense wire at on this model? The diagrams I've seen from previous threads shows an orange wire, but I don't see that anywhere on mine. Is it possible to just wire the RR directly to the battery?Comment
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The sense wire is usually wired to rear brake light switch (this is powered on with ignition), but sometimes this connection gets a poor reading about battery's condition and r/r gets confused. Try it - if voltage is still too high wire the sense direct to battery positive. Its current draw is minuscule.1981 gs650L
"We are all born ignorant, but you have to work hard to stay stupid" Ben FranklinComment
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There is no sense wire in the stock configuration. Stock only used a 5 wire R/R while the Honda is a 6 wire system. The black wire is normally tied to a switched 12V source. The O/W wire is a switch source for your model and should be seen at the fuse block. It feeds the ignition system (Coils and Igniter through the kill switch). I'd wire it into a location that's as close to battery voltage as possible. The switched voltage input (Orange wire) into the fuse block would be the ideal location but might be a pain to tap into. That's why some use the brake light switch wire. The only issue you may run into would be excessive voltage losses causing higher voltages at the battery, but you obviously know that now.Last edited by JTGS850GL; 03-14-2015, 02:37 PM.http://img633.imageshack.us/img633/811/douMvs.jpg
1980 GS1000GT (Daily rider with a 1983 1100G engine)
1998 Honda ST1100 (Daily long distance rider)
1982 GS850GLZ (Daily rider when the weather is crap)
Darn, with so many daily riders it's hard to decide which one to jump on next.;)
JTGS850GL aka Julius
GS Resource Greetings
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I ended up wiring the RR directly to the battery to save the hassle of splicing and extra wiring. Everything seems to be working now. Thanks for all of the help and tutorials!Comment
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Not sure why it calls for a switched voltage. Just make sure you don't have a battery drain issue when the ignition is off. Maybe Posplayer can shed some light.http://img633.imageshack.us/img633/811/douMvs.jpg
1980 GS1000GT (Daily rider with a 1983 1100G engine)
1998 Honda ST1100 (Daily long distance rider)
1982 GS850GLZ (Daily rider when the weather is crap)
Darn, with so many daily riders it's hard to decide which one to jump on next.;)
JTGS850GL aka Julius
GS Resource Greetings
Comment
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I think the operative words would be "for now".
What wire(s) did you connect directly to the battery?
Obviously, you need to have the R/R output wires connected, how about the sense wire? If you connected the output wire directly, please make sure you have a fuse between the R/R and the battery. If you have the sense wire direct to the battery, be aware there is a slight chance that it might discharge the battery slowly, if the bike is not run for a while. That is why we suggest connecting it to a SWITCHED power source, like the brake light supply.
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mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
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#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
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If you keep it wired direct like this, best to add inline 2 amp fuse in this connection in case wiring gets shorted out.This doesn't need to be done ASAP, but put it on your to do list.1981 gs650L
"We are all born ignorant, but you have to work hard to stay stupid" Ben FranklinComment
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Will an inline fuse help prevent battery drain?Comment
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1983 GS750ED-Horsetraded for the Ironhead
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