This mod will give you an additional 2 tones and still keep the traditional 5-way switching.
For use with a S-S-S guitar.

Step 1: 1. Tools

-Phillips screwdriver
-Soldering Iron
-Solder (obviously)
-Goggles(wouldnt feel to good to have hot solder in your eyes)
-Wires
-Drill w/ Bits

You will also need a DPDT toggle switch.

I've also seen this mod done with additional LED's.

Step 2: 2. Getting Under the Hood

*Go ahead and plug in your soldering iron so it can heat up.

-Now you'll have unstring the guitar, remove the pots from the pickguard, etc. and unscrew the pickguard from the body.

-Take the pickguard and drill a hole in it, right beside the volume pot for the DPDT switch.

(i know i put a pic of a H-S-H configuration, but this mod is for a S-S-S guitar. Im just too lazy to change the pic lol)

Step 3: Wiring, Wiring, and More Wiring

Now insert the DPDT switch in the hole and secure it in place.
-Now locate the 5-way selector switch
-Trace the wire from the neck pickup to the selector switch and label it.
-Now trace the volume pot to the selector switch, after you do that you should
see a jumper connecting the part connected to the volume part to another prong on the selector switch. Label it.
-Now solder a wire from the neck pickup prong on the selector switch to the 5th prong on the DPDT switch.
-Solder a wire from the "jumped" volume prong to the 3rd prong on the DPDT switch.

If you wired it correctly you will now have 2 more tones than the standard strat.
which will be *all 3 parallel" and *Neck and Bridge parallel* Like a telecaster.