[DeTomaso] positive ground ?

[SOBill at aol.com]

Gray,
 
It all depends on the detailed design of the Pertronix module. If  the 
module mounting surface is metallic for heat sinking and if this surface is  
also the electrical common point of the module and if this surface is  
connected to the chassis of the car when installed, you cannot simply reverse  the 
voltage input wires to the module.
 
Which Pertronix module do you have? 
 
Pertronix Ignitor (http://www.pertronix.com/prod/ig/ignitor/default.aspx)  
says they have positive ground kits available. This means either the 
electrical  components in the Ignitor are not connected to the mounting hardware or 
the  mounting hardware can be isolated from the chassis of the car without 
detriment  with the positive ground kit.
 
Ignitor II and Ignitor III have polarity reversal protection built  in. So 
those can't be used.
 
Tell Pertronix what you have and what you want. Sounds like the  standard 
Ignitor with the Positive Ground Kit should do the job.
 
Let us know what you find out.
 
SOBill
 
The main  thing is to keep the main thing the main thing.

Do the best you can with  what you have where you are.

Have fun today,

sobill at aol.com  

 
In a message dated 9/10/2013 12:55:52 P.M. Pacific Daylight Time,  
rgg at gregorycook.com writes:

I need  some help from the electrical gurus out there. I just bought a 
petronix  ignition module to replace the points in my AC Bristol. It never 
dawned on me  when I ordered it that like most British cars of the day it is a 
positive  ground system. So the question is how do I hook this thing up? Do I 
just  reverse the wires on the coil (red wire to - black wire to +)?  or  
install as per the instructions? Or throw in the towel and stick to the  
points?

Thanks,

Gray
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