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MG MGA - Coil Question
|On the coil there are two posts. One that has the letters CB and the other has the letters SW. What do these latters stand for and what post goes to the distributor?|
|CB goes to the distributor, and SW goes to the ignition switch.|
|CB = Contact Breaker|
SW = Switch
|Thanks for the reply. I should have known that but it seems the older I get the more forgetfull I get.|
|If you change from positive earth to negative earth you need to switch those wires, "CD to ignition switch and "SW" contact breaker. Confusing enough, which is why newer coils are marked with "+" and "-".|
|As CB stands for the initials of 2 words - Contact Breaker, it did not seem logical to me that the company would have made SW stand for the first 2 letters of one word - SWitch. So I have done a bit of research and found a 1930s motor engineering book (Practical Automobile Engineering Illustrated) that refers to it as Switch Wire. Now that follows the logic and gets my vote.|
This thread was discussed on 07/09/2009
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