[WillieG]

So I got a good meter. Batteries measure 12.89 V they measure 12.89 V at the main battery shut off switch where the cable goes to. I believe the alternator and the battery merge switch my eye terminal is receiving 12.8 V the ground checks good with an ohmmeter with the engine off I’m showing like .6 V at the alternator positive. if I turn the house batteries on it shows 11.3 V not sure why that would be related to chassis.. with the engine running I still show 12.89 V at the batteries and blue fire shows 12.4 V I cleaned every battery terminal. They’re spotless, clean the terminals at the chassis shut off switch, which did have some corrosion on them. They are now absolutely spotless I’m confused.

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These are pictures of my rear power box