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toyotaspeed90's avatar
toyotaspeed90
Explorer
May 23, 2013

Battery Isolator - doing exactly what it should shouldn't?

So this is a relatively new vehicle to me. The wiring is somewhat nightmare'ish... both from the factory and from what others have done. 1984 E350 Fleetwood Jamboree. 2 batteries, an isolator, ...
Class C
CloudDriver's avatar
CloudDriver
Explorer
May 23, 2013
From your voltage readings, IMO your isolator isn't pulling in when you start the engine. If it were, the voltage on both large terminals would be the same.

I would expect the generator to only charge the house battery.

I have replaced the battery isolator twice on our Minnie. Disconnect the ground wires from both the chassis and house batteries before replacing the isolator as a safety precaution.

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