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Testing for Leaking DC Current



All this battery talk has gotten to my Syncro Wagon.  If I let it sit, 
now, even overnight, the battery will die to the point that the car will 
not start.  I have been putting off fixing it by disconnecting the neg. 
terminal every night.  I have noticed that there is a good spark from 
the terminal when I connect it, so I figure there is a significant drain 
somewhere in the car.

I have tried measuring the current with my little multimeter, but all it 
does is blow the multimeter's fuse -- it is only rated to about 40mA.  
In checking Radio Shack's stock, I found that none of theirs really went 
much higher in DC Amps.

So how can I measure the draw without spending hundreds on some fancy 
Fluke meter?  I want to start pulling fuses, but unless I know when the 
current stops, it is a waste of time.  Is there an creative, alternative 
way to measure the current?

Thank you
Matthew Brenengen
'87 4kq; '88 QSW; '76 '02

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