HELP dual humbucker wiring (inner-parallel-outter)

[Andrion]

I have dual Seymour Duncan NYC and my plan is to use a 3 way mini toggle to set it to:
inner - parallel - outter
both pickups with one switch
my luthier said he doesn't know how to do it because as my bass has no volume pot to isolate the hot output (just a pickup selector and a killswitch), so he has to deal with those hot wires on the 3 way switch (that is his words, I'm a dummy about electronics)

anyone have a diagram that fits this wiring? I have both (on-on-on) and (on-off-on) switches;
please, help me fast so I can have my bass back before the weekend

 

[JKos]

From Seymour Duncan
https://www.talkbass.com/attachments/upload_2022-10-5_17-43-58-png.4835090/
Doesn’t matter that you don’t have a volume pot.

 

[Andrion]

From Seymour Duncan
https://www.talkbass.com/attachments/upload_2022-10-5_17-43-58-png.4835090/
Doesn’t matter that you don’t have a volume pot.

thank you so much!!!!
I'll send it to him

 

[JKos]

It would seem to need an on-off-on switch.

 

[Andrion]

It would seem to need an on-off-on switch.

again, thank you very much for the help!!
we tested it today, it worked fine!