Internal Resisted Coils
| 10/12/2009 | Allis Chalmers, Case, Cockshutt, Farmall / International, Ford, John Deere, Massey Harris / Ferguson, Minneapolis Moline, Oliver | No Comments
Internally resisted coils have an internal ballast resistor that does not reduce voltage until it warms up about 2 to 5 minutes.
Cold it will read the same voltage on both posts. After it warms for a few minutes it should drop voltage to between 8 and 9.5 volts for normal operation.
Rob
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