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Coil to distributor, pos. or neg.? Easy for you, Dell!

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2fordsmike

05-07-2003 07:14:03




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The Jubilee is wired from the coil's positive post to the distributor, the 841 is wired from the coil's negative post to the distributor. These are the grounding wires, I presume. Both run great! But which is correct? This must be too basic to be in my owner's manuals and or in FO-19 Shop Manual. Thanks. Mike-Iowa




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Dell (WA)

05-07-2003 07:34:02




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 Re: Coil to distributor, pos. or neg.? Easy for you, Dell! in reply to 2fordsmike, 05-07-2003 07:14:03  
Mike..... ..the general coil polarity rule is: (+) to (+). Meaning coil (+) connects to battery (+). And if battery is positive ground then the coil (+) connects to ground thru the ignition points. Rule works same wheather 6 or 12 volts. BUT CAUTION, most 12 volts system are NEGATIVE ground because of the internal solid state gutts of the alternator..... ...Dell



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2fordsmike...You lost me, read more

05-07-2003 10:58:03




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 Re: Re: Coil to distributor, pos. or neg.? Easy for you, Dell! in reply to Dell (WA), 05-07-2003 07:34:02  
Thanks, Dell, but you lost me trying to get this into this to my thick head. Wouldn't it be, on a Ford, Negative (-) coming into the coil and Neg (-) out the main wire that goes out the top of the coil into the top of the distributor; therefore the little wire (ground?) that goes to the distributor would come out of the positive (+) post on the coil? correct? Thanks, Mike



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Dell (WA)

05-07-2003 11:49:23




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 Re: Re: Re: Coil to distributor, pos. or neg.? Easy for you, Dell! in reply to 2fordsmike...You lost me, read more, 05-07-2003 10:58:03  
Mike..... .for a 6 volt postitive ground system. the Battery (-) goes to the ignition switch input. The ignition switch output (when on) becomes battery (-) and goes to the sidemount ignition coil (-) but now the electrical load of the ignition coil uses up all the negative electrons and they come out the otherside of the ignition coil primary labled (+) looking for home at the battery (+). The ONLY way the electrons are going to get home is thru the distributor points which intermittantly connect to ground which is where the battery (+) is ALSO connected. And thus you have the completed electron circuit from battery (-) to battery (+).

Therefore, the rule for sidemount ignition coils is (+) to (+). And this rule also rules for 12 volt negative ground. Which means the coil (-) must be connected to battery (-) thru the points by the common ground. Isn't that amazing? electrons can go different ways in the same ground. Somehow they figger it out..... ..respectfully, Dell

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