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When hooking batteries back up...

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Old Jul 6, 2019 | 01:22 PM
  #1  
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From: Central Oregon
When hooking batteries back up...

Every time when I hook my negative cables back up to the batteries after doing some tinkering. I always do the passenger side first, no reason why but I do. When i touch the negative cable to the battery terminal it sparks every so slightly. Then I go to the drivers side and no spark.

Do you guys see a small spark when hooking your first battery up?
 
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Old Jul 6, 2019 | 03:53 PM
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Yes. I done it both ways, driver and passenger side first. Either way, the First ground I hook up gives a very small spark and the second obviously does not since the circuit is already complete.

it has never been anything dramatic. Usually very small.

I dont believe it is it is unique to our trucks. Most vehicles I have worked on have done it. I have even hooked up ground First then the positive. I think only my older junk doesn’t do it. No computers or anything to power on those.
 
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Old Jul 6, 2019 | 05:35 PM
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Cool brother thanks
 
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Old Jul 8, 2019 | 10:00 AM
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most cars and trucks with computers, alarms, etc will spark some on first connection

The second battery connected isn't a load so it should not spark. if it does then you have a weak battery
 
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Old Jul 8, 2019 | 02:32 PM
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Great info thanks man!
 
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