Technical 1930s Vertex Mag Grounding Out To switch Off – Positive or Negative earth?

I have not decided if my car will be positive earth or negative due to the mag.

However, this can be decided at a later date – but my question, as I have never had a Vertex Mag before (an old 1930s one) is ….

When grounding out the mag to switch it off – does it matter if the car is either negative or positive earth.

I would hate to select the wrong grounding and damage the mag.

I was going down the negative earth – but in the UK pre 1940s cars were positive earth.


Any help would be apricated


Marc

 

A magneto grounding wire does not care about the the ch***is polarity since it creates its own internal voltage.

You will have no problem with positive or negative ground (earth).

 

X2 what he said^^. Think about it this way. You're just grounding it back to itself.