The old "watch for a spark" or a test light in series won't work with the new electronics.
The only reliable test is with an amp meter. The system needs a real connection for everything to charge up and drop out, may take a few minutes for that to happen.
If the load doesn't completely go away, you can use the amp draw to calculate how long it would take to discharge the batteries. If the numbers don't add up, that leaves the batteries to blame.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
... [Read Article]
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