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Lucas Sport coil

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Jim_Newman

Jim_Newman

Jedi Hopeful
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When it comes to auto electrics, I'm a complete ditz. Does anyone know the primary resistance of an SP12 Lucas Sport coil-and does the resistance go up or down when it's on its last legs?
Cheers
 
Jim_Newman said:
When it comes to auto electrics, I'm a complete ditz. Does anyone know the primary resistance of an SP12 Lucas Sport coil

-Approximately 3 OHMS

and does the resistance go up or down when it's on its last legs?

--Hard to say .However, it probably will go down if an internal short occurs in either the Primary or secondary winding.
-Cheers
Click to expand...

----------------------Keoke
 
Hi Jim
It could go either way, right up if it goes open circuit or down if short circuit. Either way I think most experience is that it will go short when it gets hot so difficult to measure until you have a running problem. Easiest way to diagnose is "replace with a known good one"

Ian
 
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