you two guys have a really good and simple method! Disconnecting the - post , but only after shutting off the clock (they have their own fuse so this is not too bad). Aside from the clock, I cannot think of anything that should be always be On.
An inexpensive multimeter (less than $6 these days) can often have a 0-10 A scale which could be used to get a measure of the current draw. But the spark, if it happens, is providing valuable information.
May I ask how old the battery is??
An inexpensive multimeter (less than $6 these days) can often have a 0-10 A scale which could be used to get a measure of the current draw. But the spark, if it happens, is providing valuable information.
May I ask how old the battery is??
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