Another member here who installed two 700w fans and a Derale fan forced transmission started having trouble with the stock alternator not being able to keep up. He ended up going with a larger alternator AND a smaller pulley on it. @thompsoj22Well, now when the fans kick on high, it drops to 12.5v and holds.
I can live with that, but I definitely want to do the big 3 and see where that gets me. Then a new alt to top it off.
All that said, I still haven't gone in for my fan or airbag recall.
So maybe the fans are pulling more than they should be.