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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Wiring Diagram for 1951 Rapide
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<blockquote data-quote="timetraveller" data-source="post: 160231" data-attributes="member: 456"><p>If I have understood your diagram then you have the output from the alternator regulator going directly to the battery, There is something, which might be a connector, in the red wire which goes to battery positive but if it is a connector it does not go to the ammeter but to the light switch and thence to the horn and brake light switch. It looks like you go through the horn to get to the dip switch!! I do not think that can be right. I have a suggestion but other more competent electrical pundits might have better ones and that is to forget a lot of what you have. You probably have a copy of Richardson's and that has the very simple wiring diagram used originally The use of an Alton plus regulator just replaces the output from the original dynamo so why not disconnect everything apart from the Alton.regulator and use your multimeter in the 10 amp setting and just start the bike and see if 10 amps is flowing. Make sure the battery is charged first and do not rev the engine or you will blow up the multimeter. Check if any current is flowing into the battery from the output from the regulator. If not then you could go upstream and see if there is anything coming out of the alternator itself. That will probably be AC and over 12 volts. Let usknow what you find.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 160231, member: 456"] If I have understood your diagram then you have the output from the alternator regulator going directly to the battery, There is something, which might be a connector, in the red wire which goes to battery positive but if it is a connector it does not go to the ammeter but to the light switch and thence to the horn and brake light switch. It looks like you go through the horn to get to the dip switch!! I do not think that can be right. I have a suggestion but other more competent electrical pundits might have better ones and that is to forget a lot of what you have. You probably have a copy of Richardson's and that has the very simple wiring diagram used originally The use of an Alton plus regulator just replaces the output from the original dynamo so why not disconnect everything apart from the Alton.regulator and use your multimeter in the 10 amp setting and just start the bike and see if 10 amps is flowing. Make sure the battery is charged first and do not rev the engine or you will blow up the multimeter. Check if any current is flowing into the battery from the output from the regulator. If not then you could go upstream and see if there is anything coming out of the alternator itself. That will probably be AC and over 12 volts. Let usknow what you find. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Wiring Diagram for 1951 Rapide
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