Yet another four-way question -- a quickie!

I'm going to put a four-way switch in my partscaster, following the Seymour Duncan schematic.

I'm also putting a P-90 in the neck, which has three conductors including a bare ground. Should it be wired in the same way as a regular Tele neck pup for four-way switching?

Thanks!

I'm pretty sure your 3 wire P90 will wire up just as a normal 4 way switch set up.
The S.Duncan wiring diagram is a little different to the Fender one, I think, But essentially the same.
Your P90 will have a positive, a negative and a ground wire, which is what's needed for the 4 way to work.

Good luck.

Good to know, thank you.