The battery is fitted with positive earth.
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Misc: Charging Systems Series ‘C’ Rapide Battery Not Charging
- Thread starter danno
- Start date
The battery is fitted with positive earth.
Just as an update.
Have been checking the wiring which is a bit tricky to get at as it’s under the battery tray.
It may be that one of them disconnected causing the lack of charge. I’m not sure though what leads go where.
Positive earth also adding to the confusion.
The green and yellow leads in the 2nd pic are from the dynamo and the blue, green and black leads in the other pic are from the regulator.
Blue and black leads come from looms I assume from the headlight.
The dynamo leads plug into the blue double joiner and the green one but I’m unsure which way round they go. Green to green would be a good bet.
If I can figure it out and hopefully get a charge again, then I can remake the wiring as it’s quite untidy and vulnerable at the moment.
Any ideas appreciated.
Have been checking the wiring which is a bit tricky to get at as it’s under the battery tray.
It may be that one of them disconnected causing the lack of charge. I’m not sure though what leads go where.
Positive earth also adding to the confusion.
The green and yellow leads in the 2nd pic are from the dynamo and the blue, green and black leads in the other pic are from the regulator.
Blue and black leads come from looms I assume from the headlight.
The dynamo leads plug into the blue double joiner and the green one but I’m unsure which way round they go. Green to green would be a good bet.
If I can figure it out and hopefully get a charge again, then I can remake the wiring as it’s quite untidy and vulnerable at the moment.
Any ideas appreciated.
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I would get a clean sheet of paper draw images of your selected components down and draw some lines between them when it works on paper buy some wires and get soldering. you could design negative earth in as well
The alternative is some clip leads a battery a voltmeter and a lot of guessing.
The alternative is some clip leads a battery a voltmeter and a lot of guessing.
Thanks for the replies.
Yes, the wiring diagram will be useful.
I’ve just found the original and rather tatty paperwork from the fifties for the JG regulator, magneto replacement unit (Mistral Engineering) and Grosset electric starter manual.
All the colour coded wiring is shown for the charging system so should be able to
reconnect it now.
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Dos this help??????
BUT - I would forget the JG kit and opt for a 'modern' unit from Paul Geoff http://www.norbsa02.freeuk.com/
Thanks. I actually have those instruction sheets in the old paperwork.
The wiring is as fig.3 except that the blue dynamo wire has been changed to a yellow one.
Three connections in all - two between the dynamo and regulator and the black
goes to the ammeter.
On my Rapide though there’s another blue lead from a loom up to the headlight
that connects to the dynamo/regulator wiring junction.
Doesn’t seem to be shown in any of the paper work so will check with a tester.
It’s ok. It’s for the red ignition/charge light mounted in the headlight.
Good idea. Started the bike this afternoon but charge light still staying on.
A charge light was never standard. Get rid of it. That is what the ammeter is for!
Not to confuse but ALL the original wires were Black! So a specific colour means nothing except if you find 2 ends the same colour they may be the same length of wire - but check AND LABEL all.
Not that hard provided you do just ONE at a time and make notes.
Not to confuse but ALL the original wires were Black! So a specific colour means nothing except if you find 2 ends the same colour they may be the same length of wire - but check AND LABEL all.
Not that hard provided you do just ONE at a time and make notes.