04-20-2014, 05:30 PM | #1 |
Member
Join Date: Dec 2012
Location: Lubbock Texas
Posts: 70
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coil help
Would a 1.35 or 1.82 ohm resistor work for a 12 volt system??? Can't seem to find a 1.5 unless some one has a Napa part number.
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04-20-2014, 05:43 PM | #2 |
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Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: coil help
It depends on several things, one is the coil. All of the pieces in the circuit have to be added together to determine the total resistance. The major items are the coil and any external resister. So, first you need to know the resistance of the coil you are using and that determines any external resister required (assuming there is little to no resistance in the wiring). In simple terms the external resister (if required) must be matched to the coil you are using.
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04-20-2014, 08:14 PM | #3 |
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Join Date: May 2010
Location: Idaho
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Re: coil help
I am no wizard on coils, however I found that I needed an external 1.5 ohm on my 12 volt neg ground 1.5 ohm coil or it got very hot if the key was left on when engine was off. I used a bypass type starter soleniod so I have the full 12 volts when cranking and the resitance added when the eingine is running or not.
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04-20-2014, 09:03 PM | #4 | |
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Re: coil help
Quote:
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04-21-2014, 09:02 AM | #5 | |
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Re: coil help
Quote:
like your example . Most systems voltage range from 11- 14.6 volts and the resistor will vary according to flow etc .... |
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04-21-2014, 11:06 AM | #6 |
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Location: Lubbock Texas
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Re: coil help
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