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1957 - 1960 F100 & Larger F-Series Trucks Discuss the Box Style Ford Trucks

ballast resistor?

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Old May 1, 2014 | 07:06 PM
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jd$
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ballast resistor?

Ok. I just replaced the ORIGINAL ballast resistor on my 1959, 292. Now here is the question. Does the resistor have a "burning in period", I don't know what else to call it. I hooked up the new resistor, started the engine, began to smell something hot, and notice a little smoke coming from the new resistor. Is this normal or do I have a problem? I haven't hooked up my volt meter to it yet. I loaned it out and haven't got it back yet.
 
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Old May 1, 2014 | 08:25 PM
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Danleig
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Pretty sure that's not normal. The resistor is there to limit current to the distributor so that the points last longer. Your condenser might be shorted, but I guess if you don't have a meter handy it's hard to check.

Did you *have* to replace the resistor for some reason?
 
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Old May 1, 2014 | 08:39 PM
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the resistor wire was broke in two places.
 
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Old May 1, 2014 | 09:49 PM
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cyclone-429
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Danleig is right... Either the condenser or coil has gone bad. The new resistor will also burn out if you keep running it.
 
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Old May 1, 2014 | 09:54 PM
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Danleig
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Yeah, probably one of them there catastrophic fails. They're big and tough, but it shouldn't be getting hot enough to burn out. Something is shorted out.
 
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Old May 2, 2014 | 07:49 AM
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B7A-12250-A .. 1957 Resistor is 1957 only (Motorcraft DY-35).

B8A-12250-A .. 1958/59 Resistor (Motorcraft DY-36).

COLF-12250-A .. 1960/70 Resistor Wire-Ignition Coil (Motorcraft DY-37).

61.49" long / Color coded pink / 1.30-1.40 ohms resistance / #20 gauge wire.
 
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