There's a red, green, black, and white wire extending from each of them. I suspect that makes them four-conductor, but not being tech savvy, I'm not positive.
Note that because these were private labeled by Duncan specifically for use in the Dean USA Pro Series guitars, they are not outwardly identical to their standard-production Duncan counterparts (see photos). It's definitely a JB/59 combo, though, as verified by the people at Dean. (Why they're both labeled "Neck" is a mystery that has perplexed me since I started buying these guitars a few years back.)
Feel free to check the Dean forum for more info, or for verification.