Re: 6 or 12 v coil ???

Posted by John T on July 31, 2007 at 18:46:31 from (66.244.83.147):

In Reply to: 6 or 12 v coil ??? posted by Kevin Mc on July 31, 2007 at 13:35:36:

Kevin, If you indeed have an external ballast resistor (regardless if part of switch or a discrete stand alone unit) and a 6 volt coil, in the RUN position but NOT while cranking iffffffff all is wired correct n functioning properly and the points closed (which they usually are) there should only be around 6 volts on the coils input (NOT to distributor) terminal. If its 12 with a good set or working points closed a 6 volt coil will run hot plus the points will burn up prematurely!!!!!!!!

Are you Sure its a 6 volt coil???????

NOTE a full true 12 volt coil will be labeled "12 volts" or "12 volts NOT for use with external ballast resistor" HOWEVER if labeled "12 volts for use with external ballast resistor" its in reality a 6 volt coil and needs external ballast!!!!!! But since yours is marked 6 volts we have to assume thats correct IN WHICH CASE I strongly suggest you add an external ballast to extend points life even if running warm hasnt harmed the coil as of yet......Id also insure any start by pass system is functioning n wired correct such as an extra lil I terminal on the starter solenoid or an extra terminal on the push to start switch used to feed hot unballasted voltage to the coil ONLY while cranking.

If it had a discrete or part of switch ballast perhaps it went bad and it was by passed?? BUT if so and you use 12 full time on a 6 volt coil it will simply run hotter and the points burn up sooner.

Until the coil overheats (if it ever does???) or the points burn up the spark ought to be plenty strong in the meantime lol

John T

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