It would be helpful to know the voltage between the black wire and ground.
Another Charging problem
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-Mike
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'79 XS1100SF 20k miles
'80 XS1100SG 44k miles
'81 XS1100H Venturer 35k miles
'79 XS750SF 17k miles
'85 Honda V65 Magna ~7k miles
'84 Honda V65 Magna 48k miles (parts bike)
'86 Yamaha VMAX 9k miles
Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65 -
Update, I purchased a new regulator from Rick’s electronics. Plugged it in, no change. I did try grounding the green wire from the field coil to ground-no change. One thing I have noticed from each regulator I have tried is that I am get no voltage reading between the green and black field coil, whereas the manual states I should have less than 1.8 v with the key on and 9-11volts with the bike running. I get nothing.
Field coil tests at 3.4ohms
Stator tests at .4ohms on each leg.
I have done continuity tests also to test for shorts and opens- all is good.Steve K
1980 xs11 special
1979 xs400
1989 Sportster
2016 KLR
2016 Africa Twin
1965 Chevelle
1970 WifeComment
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OK, not sure if this was said before but check ALL ground wires and connections. Clean ALL connectors, clean ALL ground points and use de-oxit or no-ox at the connection of wire to frame or engine. About two house to do the bike and you them KNOW you have good grounds with close to zero ohms between the neg terminal on the battery and the engine.Ray Matteis
KE6NHG
XS1100 E '78 (winter project)
XS1100 SF Bob Jones worked on it!Comment
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Thanks to all for your suggestions. I am certain all my grounds are solid. I have all tested each wire passing through every relevant connector related to the charging system- all good. The bike has been modified but the wiring harness has not been modified.
Deebs11, I have been careful not to short out probes when testing. I am a little confused about the highlighted trace on the last diagram you posted. It shows power available to the field coil from the main switch. My Clymer manual also shows this (via a tan wire) but this is not how it is wired. Below is my new rectifier ( identical wiring as the old one), and as you can see it is a 7 wire arrangement not the nine wire your diagram shows. In my earlier post I mentioned that last year the bike ran fine and was charging.
I have just assumed that there was a design change with the charging system that negated the additional wires. In my set up, I get 12volts of power via the red wire with and without the key on. So I have also assumed that the regulator is design to energize the green wire internally through the regulator circuit in a dynamic delivery based on rpm’s.
Steve K
1980 xs11 special
1979 xs400
1989 Sportster
2016 KLR
2016 Africa Twin
1965 Chevelle
1970 WifeComment
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The missing black wire is nothing to worry about. It was a ground that is now done internally. We need to establish that your field coil is getting 12v+. You need to measure this spot in this exact way when the key is on. Attach your meter black negative lead to the battery ground and use the red positive lead to test this exact spot in the harness.
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Ummm....(╯•﹏•╰)
Iffin imma seein wut I thimk I'm seein in this photo? (*゚ー゚)ゞ
The regulator/rectifier is unsecured to the bike. Technical term is "Das-Floppin". (´~`ヾ)
As the OEM has 2 (two) ground wires out of the 9 (nine) provided, and yur aftermarket gots 7 (seven)? (´_`)
It seems like the assy you gots needs to be mounted securely to the frame fOaR both a mechanical AND an electrical connection. ( ゚ ,_ゝ゚)
No connection, no electron flow, so no wurky. (o´_`o)Comment
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Ummm....(╯•﹏•╰)
Iffin imma seein wut I thimk I'm seein in this photo? (*゚ー゚)ゞ
The regulator/rectifier is unsecured to the bike. Technical term is "Das-Floppin". (´~`ヾ)
As the OEM has 2 (two) ground wires out of the 9 (nine) provided, and yur aftermarket gots 7 (seven)? (´_`)
It seems like the assy you gots needs to be mounted securely to the frame fOaR both a mechanical AND an electrical connection. ( ゚ ,_ゝ゚)
No connection, no electron flow, so no wurky. (o´_`o)
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Imma still seein' a MATH problem, Deebs11. (◔ヘ◔)
Original/old style still gots 9 wires and the new style shows 8 wires per yur delightful diagram(s). (⊙_☉)
But the real wurld rectifier/regulator (per the photo...) still only shows 7 wires. (● . ◉)
And only one black on the real wurld photo. Where's in yur new style there's......one....two......Yep. Two black wires. ( ⚆ _ ⚆ )
I can get out muh crayons....again, iffin that'd help. ヽ(•‿•)ノLast edited by Larrym; 07-22-2024, 03:12 PM.Comment
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Deebs11, zero volts at the black wire. Also the red wire feeds directly from battery positive through a fuse which is good. I get 12+ volts there. The main switch circuit in your diagram is not how my bike is wired. The green and black wire are a closed loop at the field coil.Steve K
1980 xs11 special
1979 xs400
1989 Sportster
2016 KLR
2016 Africa Twin
1965 Chevelle
1970 WifeComment
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1980 XS1100G
Intelligent people discuss ideas, average people discuss events, petty people discuss other people.Comment
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