Thread: Air pump//relay ?
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Old Jun 6, 2015 | 11:19 AM
  #19 (permalink)  
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ala_xfire
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Joined: Dec 2010
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From: Lineville, AL
Default Re: Air pump//relay ?
Most say it is safer to disconnect the negative battery terminal first, I have swapped many without doing so and never had any problems.
YES - it's PNP.
 
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