LooC (Lucy)

[sternwake]

Does your house battery system share any chassis grounds?

Ive read.about a starter battery, easily able.to start the engine, but then engine vibrations caused a rapid intermittent .circuit nature inside the battery itself, that caused all.sorts.of havoc with not.only the charging system,.components, which were replaced firat, but then engine computer as well, also.replaced. IIrc they only figured it.out.as it.was.fine.with a lead.acid jumper.pack.comnected, but went apeshit with it removed.
Battery tested fine on carbon pile load tester, and impedance tester and warranty denied, but replacement fixed issue.

Also.if.once.upon a time green or white corrosion wicked uo the battery cable.insulation, then was nicely cleaned, and shined up, by previous.owner, it can wreak all.sorts.of intermittent bizarre havoc invisibly at some.future date. Peel back.a 1/8" of Battery cable insulation to check for.white.or green with black copper beneath.