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mdecorso's avatar
mdecorso
Explorer
Nov 13, 2015

House battery not charging properly. Bypass solenoid?

I am having some difficulty getting my house battery in my 1992 Ford E350 Class C Four Winds to charge properly. I think the solenoid between the engine battery and house battery is failing. On th...
Salvo's avatar
Salvo
Explorer
Nov 15, 2015
There shouldn't be any speculation whether solenoid is bad. Place voltmeter probes across the two big lugs of the solenoid.

With engine off, voltage will be greater than 1V. Depending on which probe goes where, measurement may be greater than -1V.

With engine running, voltage will be less than 1V. If voltage is greater than 1V then solenoid is bad.

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