Cycling parasitic drain 1989 DeVille
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Electrical Technical Information Discussion, Cycling parasitic drain 1989 DeVille in Item Specific Cadillac Discussion; After getting really sick of finding my battery drained I decided to check for a drain. I found one that ...
  1. #1
    Bones78 is offline Cadillac Owners Member
    Automobile(s): 89 Deville (Mary Kay?)
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    Cycling parasitic drain 1989 DeVille

    After getting really sick of finding my battery drained I decided to check for a drain. I found one that cycles on every 15 sec or so and draws around 5 A. Pulled fuse for the radio and problem solved. Does anyone have any info on the RAP circuit? Is there a relay or module that needs replacing? If so where is it located?

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  3. #2
    still_walkin's Avatar
    still_walkin is offline Cadillac Owners Connoisseur
    Automobile(s): 1993 Cadillac deville sedan
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    Stock radio or upgrades

  4. #3
    Bones78 is offline Cadillac Owners Member
    Automobile(s): 89 Deville (Mary Kay?)
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    Re: Cycling parasitic drain 1989 DeVille

    I wouldn't call it an upgrade, but it's not stock. I've read a few guys saying that decks are tough to install without causing problems. I've gotta rip that deck out anyhow, where should I look for problems? Just junk wiring jobs in general or is there a specific mistake that's often made?

    It's also worth noting that since posting, I'm still draining power from somewhere with the radio fuse pulled. I guess it's back to work with the multi-meter. Nothing like trying to identify 2 electrical gremlins.

  5. #4
    still_walkin's Avatar
    still_walkin is offline Cadillac Owners Connoisseur
    Automobile(s): 1993 Cadillac deville sedan
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    san diego
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    1,460
    Sounds like a loose ground .. How is the factory harness look. Have you checked your battery post. Are they clean and tiht is any other of your electronics acting up

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