Davebb Posted April 22, 2012 Share Posted April 22, 2012 Hi all. Can anyone explain a 12 24v alternator? It's on an 88 superliner. It takes lots of rpm (2100) to start it charging. Is that right? The guy that I'm helping work on it says the truck has 4 12v batteries and that it's supposed to charge two of them at a slow charge rate and the other two at a much higher rate. That doesn't sound right to me. I've looked at the wiring diagram found on this forum under wiki and it seems that the alt has a separate 12v terminal. I wonder if somehow that has a trickle charge designed into it.The Alt. has a box mounted on the back of it wired to it.It would be nice to know what the maker of the alt. had in mind. Can anybody straighten me out on this? Quote Link to comment Share on other sites More sharing options...
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