i don't know how it's installed in the JPM.
one thing to consider: on a guitar with two humbuckers and no middle single, like your 2020, when installing DiMarzios, one of the pickups must be installed with the wire coming out of the neck side coil. this gives the right magnet polarities to have the middle positions, which combine coils from each humbucker, hum canceling.
[you can also get the right magnet polarity by popping the magnet out and flipping it and putting it back in the pickup. people do this to get the right magnet polarity for H/H guitars on
neck pickups with one coil of screw pole pieces and one coil of slugs. this lets you put the screw poles of the nkec pickup closest to the neck].
the Air Norton has one coil of screw poles and one coil of slugs. the SS has the same poles on both coils -- you can rotate it and it will look the same either way.
if you want the less bright orientation of the SS in your H/H guitar, with the wire coming out of the coil toward the neck, install the AN with the screw poles toward the neck. this will give you the right magnet polarities.
if you want the brighter orientation of the SS in your H/H guitar, with the wire coming out of the bridge coil, then you have two choices with the AN. you can install it with the screw poles away from the neck. it will work fine, but it will look 'backwards' to anyone familiar with gibson covered humbuckers. or you can pop out the magnet in the AN, flip it, and install the pickup with the screw poles toward the neck.
depending on which pickup you rotate, the wire colors will be different than the
ibanez wiring diagram.
if your tech is good at wiring, they will know all this. if they aren't, they might screw it up. your tech should also be really careful if they do flip the magnet, since they could break the pickup.
