Posted by John T on October 27, 2014 at 06:09:21 from (216.249.72.121):
In Reply to: 300 burns up points posted by VaGasman on October 26, 2014 at 18:32:11:
There can be a few (and more) reasons for premature point failure.
1) Excess coil current, it should be in the range of 4 and less amps.
2) Weak or completely open Condensor or one that's not the right size (MFD Rating).
3) Coil with too low LV Primary Resistance (thus allowing more then 4 amps of current the points have to switch)
See if that coil has a LV primary winding resistance (between little + and - terminals) of around 2.5 to 4 ohms????????? If so it should be fine on 12 volts no ballast required. If its way less, like 1.2 to 2 ohms IT NEEDS AN EXTERNAL SERIES VOLTAGE DROPPING (12 TO 6) BALLAST RESISTOR otherwise the points will burn up quickly.
A 12 volt coil may be labeled "12 Volts" or "12 Volts NOT for use with Ballast" HOWEVER if tis labeled "12 Volts requires Ballast resistor" its a 6 volt coil and needs the ballast or it will run hot and the points burn up quickly.
I suspect the coil may be a 6 volt unit or needs a ballast resistor therefore its causing excess current burning up the points or else the condenser is bad or open or not wired correct or the points are just junk quality
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