Intermittent failure to start.
I'm looking for ideas - I have a 2018 Thor Chateau C class 28E motorhome. On three occasions the engine has failed to start due to what appears to be a dead battery. This happens after the rig is in...
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Just wondering if there is some type of battery isolator that has failed. There usually is a steady current draw from the radio from it's keep alive memory, plus other things as suggested. If you get a clamp-on amp meter you can measure the current draw, you can also measure it with a voltmeter, then while you watch the amp meter pluck each fuse in and out till you see the current stop. That's the offending circuit.
