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Parasitic Battery Drain e53 Parasitic Battery Drain e53
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  #171  
Old 04-20-2023, 06:35 AM
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Quote:
Originally Posted by X5chemist View Post
You may want to start your own post. The connectors are behind the instrument cluster. After you determine which one is causing the draw, you can narrow it down further. Each connector is connected to something. Each wire would have to be back probed.

Since the turn signal indicators seem to have a short, I would replace the switch. It may eliminate your issues.
I'll start there, thanks for your help and advice.
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  #172  
Old 04-20-2023, 09:04 AM
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If I pull F12, F25 and F86, my draw is showing 60 milliamps, if I set the multimeter to A. If I set it to mA, it's showing 79 mA.
So there's still some considerable draw after pulling these fuses...
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  #173  
Old 04-20-2023, 09:16 AM
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Disconnected the charging USB ports with voltage display, and the draw is showing between 26 and 34 milliamps, pretty decent!
Wonder where the rest is coming from
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  #174  
Old 04-20-2023, 10:28 AM
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Does it bounce back and forth? It needs to be steady. Pull F60 out of curiosity. Plus F11.
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  #175  
Old 04-20-2023, 07:59 PM
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No it doesn't bounce at all. It's just the different values I get based if I select A or mA on the multimeter.
Tried pulling fuses F11 and F60, no change at all.
I pulled every single fuse. The only difference was produced by the fuses I described. I got the battery tester, and if the tester is good, my battery is bad, probably from all that draining etc...
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  #176  
Old 04-20-2023, 08:00 PM
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  #177  
Old 04-21-2023, 08:55 AM
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Ouch, that will do it too. Unsteady voltage supply.
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  #178  
Old 04-21-2023, 02:34 PM
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This test was with battery disconnected. Theb I reconnected the battery cable to do the cranking and charging test, and redid the battery test. Still pretty bad I figure.



Now just need to but a new battery. Anyone tried optima yellow top?
Its marketed as being able to maintain a draw of lots of accessories and being able to be discharged without getting damaged.
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  #179  
Old 04-21-2023, 03:05 PM
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I don’t have experience with a yellow top. My ‘83 C10 with a ZZ4 motor uses a red top. High compression cranks. It has no problems keeping charged with a 165 amp alternator. It can sit for weeks with no use.
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Last edited by X5chemist; 04-21-2023 at 04:11 PM.
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  #180  
Old 04-21-2023, 03:30 PM
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Nice! Yellow top is similar to red top but has more reserve capacity and ability to be deep cycled, which would be great for my purpose, or anyone with battery drain issues
https://www.motortrend.com/how-to/op...-vs-yellowtop/
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