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JimH963
#1 Posted : Thursday, August 06, 2009 11:47:11 PM(UTC)
JimH963

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Got an interesting one. After being on the hard for 5 years, my boat is finally back in the water where she belongs. We've been going thru her, fixing this, upgrading that; just enjoying her again. Have just noticed that when I turn on any 12 volt device (nav lights, blower) my capac meter goes to either 4 (overhead lights) or 0 (blower). As soon as I turn the device off meter goes back up. I'm going thru the boat looking for wires in the water in the bilge, wires that have rubbed thru, ect. I figure on just disconnecting things one at a time to see if I can find the problem but thought I'd throw it out and see if any of our fine members have any ideas. Thanks!
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pfhlaw
#2 Posted : Friday, August 07, 2009 6:52:22 AM(UTC)
pfhlaw

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I'm guessing it's a ground issue. The systems you turned on are on separate circuits and don't share anything except their grounds.
Peter
1981 32' sedan bridge
twin Chrysler 360 cu. in. 250 hp engines
Raw water cooled
Nimbus II
Home port: New Buffalo, MI
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GB49
#3 Posted : Friday, August 07, 2009 1:47:17 PM(UTC)
GB49

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The blower affects my CAPAC readings a little but I attributed that to the wires being too close to each other. However, I've never seen the extremes you have mentioned.

I'm with Peter on a ground issue.

May want to check/clean/tighten the grounds from neg batt terminals to the hull ground lugs.

Check the wiring of the Capac. I can't recall off the top of my head how it is wired. I do know the wire that goes down to the transducer can get corroded inside the plastic cylinder housing.

-Karl

1986, 32' Sedan, twin 360ci, 275hp Chrysler's w/ K&N flame arrestors
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