Would like a schematic for wiring a Paul Reed Smith w/2 humbucking pickups ,for 2 tone pots , no volume pot , & a 3 way toggle switch .

What you describe sounds like pickups fighting against each other meaning, does this occur when using pickups individually or together? This is normal when using more than one pickup together, if it occurs in single mode, something is wired wrong. Another thing is, If using single, are you splitting coils? Individual coils wired wrong can do this, a bad pickup selector switch can also. A loose wire or fiber touching the tone pot capacitor or ground could also. A dead coil on a humbucker can as well. I'm guessing that you are using these in combo meaning a possible pickup selector switch may not be switching properly. The player's level of experience is also in my mind since, all of my guitars do the exact same ONLY when I use more than one pickup. I hardly ever use more than one at a time unless I'm playing a strat.

check at seymourduncan.com...your humbucker needs to have 4 conductors in order to tap coils...which is what I presume you want to do with the push/pull...
relative pickup wire colors:
http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=coil_splitting
now match the Fender colors to the Seymour Duncan wirs and check this out:
http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=coil_splitting

Here is the wiring diagram for a 2 humbucker, 2 volume, 2 tone, 3-way switch setup. The wires off the pickup may be a little different. Just attach the lead wire to the arm of the pot and the ground to the ground on the top of the pot. Should be very strait forward.

http://www.seymourduncan.com/pdfs/support/schematics/2h_2v_2t_3w.pdf

For one volume and tone pot, it would be like this

http://www.guitar-mod.com/wiring/LP_junior.gif

All the earths have to eventually terminate on the earth of the cord.

here is a diagram on how to add a tone control to humbuckers.

http://sthac.free.fr/pictures/sthac-HSH-wiring.jpg

for your set up, all u have to do is to do is wire the positive parallel form the pick-up or volume knob into the middle lead of the pot, wire the negative parallel to the casing of the pot, and put a .022- .033 ohm capacitor from the casing to the pot lead on the right, when viewed from the bottom. wiring parallel means "tapping into" the circuit, not rerouuting the circuit.

Search this site for you config of pickups, pots and swotches.

http://www.guitarelectronics.com/category/wiringresources/

It's wired like this: http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=HSH_1v_1t_5w

This is exactly how any 2 pickup, 2 volume, 2 tone, three way switch guitar would be wired from the factory. Best of luck!

http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=2h_2v_2t_3w

Santana's had quite a few guitars, take your pick:
1972 - Gibson Les Paul / Gibson SG Special with Humbuckers / Gibson L-6S
1975 - Gibson SG Special with P90 pickup (Woodstock Festival)
1976 - Yamaha SG 175B / Gibson SG Special with 3 Open Coils
1982 - Paul Reed Smith (PRS) Custom
1988 - PRS Santana II with PRS Santana III nickel-plated pickups and .009-.042 D'Addario strings

If you can't clean the pots or if you just want to try replacing them, try using
500k pots again, in case one or both of the pots is worn or dirty or
defective. If that doesn't work, and cleaning or replacing the
switches doesn't work, then the problem is probably elsewhere.
You could put a 500k resistor (with a sufficiently-high power rating of at least half the power rating (Watts) of the pot) in parallel with the pot, or, to cover all bases, put a 500k resistor from each of the two outer lugs of the pot to the middle lug. That should change it into the equivalent of a 250k pot. You could even just temporarily clip the resistors on, with alligator-clip leads, if you're very careful, just to test it.

Good luck,

The dude.