No matter what’s going on inside the guitar, The Redeemer normally always go last just before the output. All you should have to do is take out the old ¼” jack – connect the brown wire from the Redeemer to the signal wire (the one that was going to the “tip” of the old jack) and connect the blue wire from the Redeemer to the ground wire (the one that was going to the “sleeve” of the old jack)

We have diagrams for installing a Redeemer here: http://www.creationaudiolabs.com/redeemer