22 or 24 lugs? It should be 24.
Anyway, you need the super switch with 24 lugs to wire up the Silhouette Special and the silent circuit to the current factory wiring. It is not possible with a standard 5-way switch. There is of course a ton of wiring options with a standard 5-way switch and no shortage of websites to find them. Just do be careful that each manufacturer has a different wiring colour codes; i.e. red, green, black, and white for DiMarzio is not the same as red, green, black, and white for Seymour Duncan, which is different to Barden, or Gibson, etc. It's a pain but there ya go.
It should be clear from the diagram how to hook up the silent circuit. The silent circuit is in series with the single coils (which are not themselves connected to ground but grounded through the silent circuit). Violet to the ground side of the middle (RWRP) pickup, blue to the ground side of the neck pickup. Black from the silent circuit to ground, Red is the 9V power and when yellow is connected to ground the silent circuit is inactive. If you can't read the diagram and figure it out, it's perhaps not a job you should handle yourself (and yes, it gives me headaches too).
Of course the silent circuit changed in 1997 and I don't know how different that version was to the current one, or how to tell the difference, or if they only changed the wiring.
Where do you live? Maybe someone can recommend a good luthier or technician who can handle the job for you.