How to read amps on a multimeter, Trying to find a parasitic drain |
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How to read amps on a multimeter, Trying to find a parasitic drain |
ThinAir |
Oct 20 2020, 11:49 PM
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#1
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Best friends Group: Members Posts: 2,543 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region |
Electrical systems & I are not friends, so I have little experience with this. I don't know how to interpret these readings or how the range changes what I'm seeing. Searching has turned up lots of stuff that seems to assume that you know this. TIA for the advice.
Both of these readings were taken with the circuit in the same state. (I thought I had one when set to the 400A range). |
Mark Henry |
Oct 21 2020, 08:45 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
For parasitic drain pull all your fuses, try a fuse one at a time watching for a tiny spark.
This way you narrow down your search to one circuit. For the whole car do the same with the battery + cable, then almost touch the cable to the post looking for a spark. It's a really tiny spark but I can tell if I have a radio clock. BTW don't do this on a modern car, but it's OK if you have aftermarket FI on your 914. |
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