I recommend having your pickups installed by a legit guitar tech, especially if you are converting from active pickups to Valhalla pickups. Modifying guitar wiring can be tricky, and if your circuit isn't 100% correct, your pickups will not sound how they are meant to (or even make sound at all).
If you decide to try wiring your pickups yourself, I recommend using this website as a resource. please contact me at firstname.lastname@example.org with any questions. Thanks!