powerspan pickups

I’m new here, and I’m sorry if this has been asked already. Has anyone upgraded the stock Ibanez preamp to a Bartolini using the stock Ibanez PowerSpan pickups? Looks like the Bart uses 2 wires and the pickups have 3. Hope that mashes sense. Appreciate any help I can get!

I currently own a Sterling Subray 4 which I'm happy with except for how much it weighs. I recently went to a bass store and I fell in love with the Ibanez 300 as it feels so comfortable in my hands and it's very lightweight. I've also been wanting a 5 string for a while, so now I'm thinking of...