Battery Drain

Discussion in 'Electrical' started by blownmodela, Apr 5, 2009.

  1. blownmodela

    blownmodela Member

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    Electrical short I believe some where. Just need to know where to start. Put new battery in fully charged ran great started right up, let it sit over night and dead as a door nail come morning. Check with ohm on disconnected battery cable ends and get reading of 150 ohm. When I had it running I disconnected the battery terminals and bike died, on a car you do this and as long as the altenator is good it will keep running ??? Is this the same on bikes. O ya this is a 93 Electriglide.:newsmile010:
     
  2. wildspirit97

    wildspirit97 Senior Member

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  3. blownmodela

    blownmodela Member

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    Man my battery is so dead it wont even charge, cross boath pos and neg on battery out of bike and not even a spark. Put on trickle charge over night and nothing unbelievable.
     
  4. jimweaver

    jimweaver Member

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    Looks like you have a negative ground. Easiest way to check is with the battery charged and the key off, disconnect the negative side of the battery. Run a test light between the battery terminal and the cable. If the light is on, something still has power with the key off. That's the easy part. Now you have to figure out what's on. All you can do is start disconnecting stuff and watch the light. When it goes out, you've got it. Repair or replace hot component.
     
  5. STEVE07

    STEVE07 Well-Known Member Staff Member Super Moderators

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    It sounds more like you have a dead cell in the bat. time for a naw one
     
  6. blownmodela

    blownmodela Member

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    Hey Steve (brand new battery) couple hrs old. Jimweaver sonds great good explaining man, back in touch as soon as I check a few of these things out. Txs alot o k then just tried the test light trick with a good battery, disconnecting neg battery cable from post with ign off run a test light from neg cable to post and no light. Next idea ??
     
    Last edited: Apr 5, 2009
  7. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

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    I would bet you have a bad voltage regulator that is allowing the current to bleed back. Here is a great set of tests for the charging system. And no, you can not run the bike without the battery connected.

    Testing The Charging System - Harley Davidson Community

    TQ
     
  8. NEWHD74FAN

    NEWHD74FAN Experienced Member Retired Moderators

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    Judging by the age of the machine, both TQ and Smitty are neck and neck...! Use your ohmmeter and see if basic resistance goes to infinity (highest resistance open circuit...if 1) you disconnect the starter & solenoid connection or 2) you disconnect the voltage regulator connection to be sure. Both guys' are pretty good and I wouldn't bet on either if I was a bettin' man who owned the "House". :newsmile036:
     
  9. blownmodela

    blownmodela Member

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    Hey Smitty brand new 1.7 kw starter. (Brand new) Txs
     
  10. jessiefarias

    jessiefarias New Member

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    I had an 02 hog with the same problem. it turn out to be the relay on the starter, I change out the starter.