Re: Remplacing Pickups!!!
Hi Juan,
Welcome to the forum.
It´s unusual to see a diagram for a strat with just two pickups so you have a few options from what is available. I´ll let you decide and hope I don´t confuse you with too many options. If you find it confusing stick with option 2 or 3 - whichever seems easier - and worry about changing it later.
Out of curiosity why are you going with a 3 way switch? Why not use a 5 way and not have to modify the wiring later - unless you want to avoid the extra "in between" positions.
Option 1)
This is the more or less what you´re looking for but the switch and pickup are different. The diagram is for a 5 way switch instead of a 3 way. As you´re going to add the bridge pickup later you can just leave it out for now...
http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=3s_1v_1t_5w
...so you won´t have the "bridge white" wire going from the bridge pickup to the switch and you will only have two "Black wires from pickups" going from the pickups to the top of the volume pot.
When you get your bridge pickup they are the only two wires you´ll need to connect.
Option 2)
Alternatively a standard tele diagram should leave you with exactly what you want but you´ll need to modify the wiring later to add another pickup.
http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=standard_tele
Option 3)
As the pickups you mentioned are single coil sized humbuckers they may have more than two wires...in that case it may be easier to follow a diagram for two humbuckers which would be more along the lines of wiring for a les paul with just a vol and tone, then later worry about changing the switch for
http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=2h_1v_1t_3w
Again with this diagram, with the bridge pickup you´ll need to modify it later on.
Lastly, here are diagrams showing a couple of different switches which may help:
http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=3ws_trans
What part of Spain are you in?