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Posted by Ggg [98.213.202.88] on Saturday, November 10, 2012 at 13:27:29 :
In Reply to: Cummins ECM & grid heater? posted by Don in Missouri [69.69.205.226] on Friday, November 09, 2012 at 09:22:57 :
Don it depends, if you are talking about a 1st gen Dodge like in your picture then it is just a starting aide. The compression of your engine, and speed of cranking make the biggest difference. I have a few 12v Cummins B engines and none have grid heaters, but all have block heaters and they seem to start fine for me.