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Old 12-05-2013, 11:57 PM   #1
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Fog Light + Engine Off = Dead

I just recently rewired my Hella Rallye 1000 fog lights to my 03 sport. problem was i shut the jeep of for a max of 5 mins with the lights still on and it wouldnt start after that, the dome lights would still come on. Now im no expert but shouldn't it not drain the battery that quick? the lights pull less then 10 amps i believe and my alternator gives 117 (or what ever is stock). Also when all this was happening it was 3 degrees outside.

Picture below is how i have my wiring set up for the fog lights.

So any ideas on why the battery drained so quick and if so solutions on how to fix it?

I will also be getting my battery and alternator checked out tomorrow to see if they are up to par.
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Old 12-06-2013, 12:27 AM   #2
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Sounds like your battery is on its way out. What's the wattage on those lights?

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Old 12-06-2013, 01:31 AM   #3
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im going to say they are 55w
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Old 12-06-2013, 02:54 AM   #4
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Yeah you should be able to have those on for hours. How old is the battery? Get it tested if you can
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Old 12-06-2013, 09:25 AM   #5
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Quote:
Originally Posted by jeepwayoflife View Post
Yeah you should be able to have those on for hours. How old is the battery? Get it tested if you can
X2.....also check and clean battery connections.
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Old 12-06-2013, 10:12 PM   #6
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I got the Battery and Alternator checked and they said they both were in good shape. the mechanic believes its bc of the sever cold we are having right now. Its 0 degrees and thats not including the wind chill.
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Old 12-06-2013, 11:13 PM   #7
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I got the Battery and Alternator checked and they said they both were in good shape. the mechanic believes its bc of the sever cold we are having right now. Its 0 degrees and thats not including the wind chill.
Still, the battery should last a long time before it doesn't want to start. I would replace the battery and see if it helps. Sometimes its hard to test a battery as cells start dying.

Did you make sure all connections are clean like Water Dog mentioned
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Old 12-06-2013, 11:28 PM   #8
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Wind chill has NO affect on inanimate objects EXCEPT to cool them down to ambient more rapidly than without wind.

Get it started....... put a DC voltmeter (multimeter on DC volts)across the battery terminals....... turn on ALL accessories.......the meter should read 12.5 Volts or higher... but NOT more than 15.......if it does NOT..... possible Alternator issue (loose belt, glazed belt, etc) if it DOES......check and clean ALL connections at battery/starter to bright shiny metal (do not forget INSIDE battery clamps)......IF, after cleaning..... you still have issues POSSIBLY battery...... replacing a battery "just because" some forum guy says so can be expensive. If it does not do well in THESE tests... have it LOAD TESTED at a place that sells batteries for a living...... LOAD TESTING is the only true test for a battery......no matter WHAT is said elsewhere....

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