Question about 2003 Harley Davidson FXDWG Dyna Wide Glide

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2003 dyna ignition breaking down

My 2003 FXDWG Loses ignition and power to lights while riding. Engine backfires and runs but on very reduced power and lights dim. Signals cut out entirely. Sometimes am able to nurse it along until it cuts back in again. Other times I have to let the bike sit for a few minutes and it powers up again and it goes for a short distance and cuts out again. Resting is a short term fix but gets me home (if I'm not too far away). Will a grounding problem do this or an overheating relay ?

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  • dcd13 Jun 19, 2009

    Sounds reasonable. Bike has only 4,800 miles, hope it is only the ground.

  • dcd13 Jul 04, 2009

    Turned out to be a number of loose connections on the back of the main power distribution panel. Gotta love those pre-rubber mounted vibrating Harleys. Now if I could just find the circuit for the on again off again tail light and oh yah the chrome covers that fall off !



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  • Harley Davidson Master
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It never hurts to check your grounds, they have a habit of loosening up. It sounds like either the voltage regulator or the stator is failing to me. If you can get it to fail at home take a multi-meter and get a reading on the stator, I don't know the values on a dyna, but you should get a reading at idle and it should climb as you rev the motor. When my sporster did this it turned out to be the stator.

Posted on Jun 19, 2009

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Sounds like ther passive rectifier. Exact same symptoms with my Vic 99 TC.
New rectifier was a complete fix.

Posted on Feb 18, 2012


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