Quote:
Originally Posted by Doe69936
John I see no corrosion they are rather clean on the battery side the starter side looks dirty as as any starter but nothing remarkable as far as corrosion it is possible I suppose but it seems unlikely by the look of it
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Tell us more about your bus- cummins is a company, not an engine model.
Is your bus rusty/corroded or clean?
If it's that big of a draw, it'll get hot somewhere- hot enough to really burn your finger. Get some more eyes on it while you try?
Battery terminals are all tight. Batteries are bridged properly w/ bus bar/cable? photos help us see something you miss.
Charge the batteries between attempts. don't keep cranking or you will be changing a starter, too.