[Spridgets] Coil Question

[WeslakeMonza1330 at aol.com]

Intermotor coils were always of the lowest quality.
 
 
In a message dated 06/11/2017 07:54:38 GMT Standard Time,  
spridgets at autox.team.net writes:

I have gone through a number of coils in the past few years. They may have  
been faulty but........ 
Reading the Lucas repair manual carefully, I came across this "Test 6.  
Voltage at "-" Terminal of Coil............4. A high resistance in  circuit 
from the coil to the CB on the distributor." 
1. Manual was published in 1995 and is for negative earth cars, my car is  
positive earth. 
2. "CB" is not used on modern coils, they are "-" & "+".  When I  connected 
my coil up "CB" = "+". 
This is where my question comes in. "CB" that was "+" in 1959 is now shown  
in 1995 as "-". (Logical as the cars are now negative earth)  
Does it makes a difference? Were coils designed for positive earth? Am I  
therefore running the coil backwards as I am using a coil designed for  
negative earth? 
Cheers, 
Martyn 

PS: Standard Intermotor coils, yes I am aware of the Lucas Sport coil  
problem, and I believe Lucas/Intermotor may have had an issue (Coils were  
replaced over a 5 year period, so I would think I avoided the 'bad batch" if  
such existed).

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