Coil + and - @ CB and SW
Posted: Sat Dec 08, 2018 1:03 pm
I have a spare coil , which has + and - on the nose end . The original coil markings are: CB and SW (eg Con. breaker / Switch .)
Am I right in thinking , that the minus - sign , is the SW terminal : and the plus + sign goes on the CB terminal ? I hope this makes sense ??
( ps . my 1948 P3 had no battery when purchased ) I believe the following is the case if there is any advise please:
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• It depends on whether you are still +ve earth or have converted to -ve earth.
• If +ve earth then the CB = +ve, SW = -ve.
• If -ve earth then CB and SW will (or should) have been reversed.
• So +ve earth use + to contact breaker,
• If -ve earth use + to the ignition switch.
________________________________________
•
so to confirm : I have re built the original Dynamo and flash sparked the F post on it with the battery in the Pos Earth position therefor the car is now Pos earth and so on the coil pos earth CB = + ( plus ) and is connected to the distributor leaving SW or - ( minus)connected to the switch.
I hope I have not made this more complex than needs be!
many thanks
John
Am I right in thinking , that the minus - sign , is the SW terminal : and the plus + sign goes on the CB terminal ? I hope this makes sense ??
( ps . my 1948 P3 had no battery when purchased ) I believe the following is the case if there is any advise please:
________________________________________
• It depends on whether you are still +ve earth or have converted to -ve earth.
• If +ve earth then the CB = +ve, SW = -ve.
• If -ve earth then CB and SW will (or should) have been reversed.
• So +ve earth use + to contact breaker,
• If -ve earth use + to the ignition switch.
________________________________________
•
so to confirm : I have re built the original Dynamo and flash sparked the F post on it with the battery in the Pos Earth position therefor the car is now Pos earth and so on the coil pos earth CB = + ( plus ) and is connected to the distributor leaving SW or - ( minus)connected to the switch.
I hope I have not made this more complex than needs be!
many thanks
John