There are a lot of ways these pickups could be wired. It all depends on what you want out of them. I assume (???) that you want to use all three on the bass. If so do you want individual volume controls for each? Individual tone controls for each? Do you want a pickup selector switch? If so do you want positions for each pickup solo, and a position for each possible combination? That's seven possibilities for the switching. So you need to decide what functionality you want before anyone can supply a wiring diagram.
Also be aware that balancing those pickups will be quite a challenge. Noise will also be an issue.