Connecting tone control to bridge pickup on Concord II

Guys, does anyone made a mod connecting a tone control to bridge? I was thinking to assign 1st tone knob for neck and mid, 2nd for bridge. I tried to do it today but as I've made 2nd tone working for bridge, 1st tone is not working after wiring it to neck and mid... Pickups aren't stock so maybe electronics was changed at some point.
My guitar is Concord II but maybe Spectrum users had same idea as it's quite common modification around 3 single coils guitars.
Could anyone help me with any tips or diagrams? 

This is what I used on a strat build recently, it isn't without issues, the 2+4 positions will be less bright, play around with capacitor values

Thanks Sgt. Vimes
Does it matter which slots on the pots will be wired?

Yeah, just follow the diagram exactly

I forgot to say thank you Sgt!
I have ended up with connecting neck and middle together as characteristics of these two is similar.