11-06-2018, 09:38 AM
The Berry article confirms that the connections are different for pos and neg earth systems. Woodrow shows a 1933 wiring diagram (neg earth with coil marked SW going to ignition as we would expect) and 1936 (pos earth) showing just the same. So were coils produced after 1935 with the terminal labels switched round somehow, or was the same old coil used because nobody bothered as the system would still work, albeit not as well as it should?