Vimfuego, i just installed my tz according to your diagram. but i havent put a string yet.. i plugged them into my amp without strings to check if it's buzzing on TZ.. it's not buzzing on bridge at all! i've check the pup selector(5way) 1, bridge not buzzing, 2 buzzing, 3 buzzing, 4 not buzzing, 5 buzzing.. i guess there's somethings wrong? is it?
Sorry, didn't see this post before!
When you say you checked without strings by listening to the buzzing, I'm a bit confused, I wouldn't expect positions 1, 2 or 4 to buzz as they are the humbucking selections.
Have you tried tapping the pole pieces with a screw driver, that's the easiest way to check if a pickup is at least connected you should get a loud click from the selected pickups, then you still need to put strings on to check the circuit properly.
As you say position 2 buzzes, then maybe the only problem is that you've selected the wrong coil of the TZ in position 2. If so, then:
bare wire + BLACK of the tone zone= Ground
RED + GREEN of tone zone= goes where the RED of the stock pickup goes
WHITE wire from tone zone = WHITE of the stock
This will select the other coil in position 2, but should leave position 1 the same.