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Thread: Testing a coil 12V

  1. 16th February 2014, 11:30 AM #1
    Dinty's Avatar
    Dinty
    Dinty is offline TopicToaster
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    Testing a coil 12V

    Can some one tell me if what I'm doing is correct, I'm trying to work out if my coil is suitable to use with electronic ignition. The vehicle is a Series 2A (Ambulance) 12V - earth, I have disconnected the wires x 3 from the coil, using my multi-meter, with the + wire off the meter, onto the + terminal on the coil, and the - wire into the coil where the coil/dizzie wire sits, I get a reading of 6.69ohms (with the meter set on 20K!), the instructions say something about the coil has to have a reading greater than 1.4ohms, am I safe, did I do the test correctly???, hoping somebody has the time to read this and steer me in the right direction, cheers Dennis
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  2. 16th February 2014, 01:35 PM #2
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    HowardSmall
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    Dennis


    If your meter is set to the 20K range I believe it will not give a reading of 6.69ohms. Are you sure you do not have it set to auto ranging?


    You will be better off setting it to a range closervto the expected reading.


    Is this a Jolly kit? I have one on my Ferret and plan on putting one in my S2A FFR.


    Howard


    Quote Originally Posted by Dinty View Post
    Can some one tell me if what I'm doing is correct, I'm trying to work out if my coil is suitable to use with electronic ignition. The vehicle is a Series 2A (Ambulance) 12V - earth, I have disconnected the wires x 3 from the coil, using my multi-meter, with the + wire off the meter, onto the + terminal on the coil, and the - wire into the coil where the coil/dizzie wire sits, I get a reading of 6.69ohms (with the meter set on 20K!), the instructions say something about the coil has to have a reading greater than 1.4ohms, am I safe, did I do the test correctly???, hoping somebody has the time to read this and steer me in the right direction, cheers Dennis
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  3. 16th February 2014, 11:14 PM #3
    Blknight.aus's Avatar
    Blknight.aus
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    a higher resistance is always safer than a lower one.

    it will limit the flow of current if the resistance is too low some delicate electronics may see it as a short circuit and promptly go fut letting the smoke out to protect the coil.
    Last edited by Blknight.aus; 16th February 2014 at 11:17 PM. Reason: worst spelling ever
    Dave

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