Quote:
Originally Posted by Alastair Thomas
On the Cab 13, can anyone tell me the purpose and value of the ballast resistor shown on the wiring diagram in series with the coil. As far as I can see it only drops the primary winding current.
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Hi
I think you mean the Ford system ? The coils are rated at 4.5 Volts or something like that. The resistor is wound with ni-chrome wire , like the wire in those old electric bar heaters, the resistance value changes with temperature/current flow . It was a horrible system and the cause of many breakdowns.