To look cool ???????
First...I don't play bands anymore...just for personal pleasure. Secondly to look cool...umm nope...the micro switches are hardly visible anyway...and fit in the space where the regular strat switch goes....that's it. One thing though and that pickup selection this way is probably not ideal for a live stage performance...unless you are used to the switch positions...so out goes the cool theory..it's just experimental...that's all. Also, I have neither had a Jag or want one and have not been through 'any phases' - whether to be cool or not...
To answer what's the point - I just like to experiment with wiring...to see what's possible, what sounds you can get...that's all...I did this originally way back in 1985...and it was most certainly not for looking cool...what utter crap!
I was just sharing ideas as I thought this was a forum for that...!
Anyway for the guy who asked parallel/series...here's a long explanation
On a stock Strat, pickups are wired in parallel at the "2" (neck/middle) and "4" (middle/bridge) positions. It is just a modification which not only allows you to select pickups in any combination, but to select whether they will be wired in series or parallel. I consider this one of the most useful modifications possible (after shielding). Without going too deep into the theory we can say that series vs. parallel pickup wiring affects the final tone in a couple of ways:
1. Pickups typically have an impedance of about 4k to 10k ohms. When the pickups are in parallel, each is a fairly low impedance inductive load on the other. In short, each pickup is effectively a primitive high-pass filter between the other pickup and the amplifier. When the pickups are in series, they do not load each other and the filtering effect is much less noticeable because the variable impedance component is now in series with the (typically quite high) input impedance of the amplifier.
2. The above mechanism also has a noticeable effect on the output level of the pickups. In every case that I've tried the guitar is noticeably "hotter" when the pickups are wired in series. Again, this is because the pickups are not acting as a load on each other.
3. The effective inductance of two inductors (coils) is radically different when those inductors are wired in series than it is when they are wired in parallel. Inductance is one of the factors that modifies frequency response.
4. Depending on how sensitive the first gain stage (stomp box, amplifier, etc.) is to impedance and inductance, the actual difference in tone between series and parallel wiring may be subtle or very noticeable.
Inductance is similar to resistance in that the total inductance is simply added when inductors (pickups) are wired in series -- but you take the product over the sum for parallel inductors. Let us say simply for the sake of argument that each of the pickups has an inductance of 10mh (inductance is measured in Henries, or more commonly, in millihenries):
* In series, our total inductance will be 10mh + 10mh -- or 20mh.
* In parallel, our total inductance will be (10mh X 10mh) / (10mh + 10mh) = 100mh / 20mh -- or 5mh.
Remember, inductors work just the opposite of capacitors -- they tend to impede high frequencies while passing low frequencies. Of course, it's not quite this simple because the pickups aren't simply inductors -- each is also generating a signal. However, I'm sure you can see that tonal response will vary quite a bit depending on whether the pickups are in series or parallel. It's difficult to reliably quantify this difference but I'll go out on a limb and describe pickups wired in series as having a bit more midrange punch than the same pickups wired in parallel. Usually. No guarantees.
So, which is better?
Unfortunately, that's one of those questions that has no answer. The sound of the two methods is just different. Keep in mind, though, that most pickups were designed with the idea that they would be combined in parallel by the stock wiring and that is the "sound" the pickup designer was striving for. I would recommend that you wire Strat pickups in parallel if you aren't going to provide switching between series and parallel. On the other hand, I regard the ability to switch between series and parallel wiring as one of the most tonally useful modifications you can perform -- much more useful than pickup phasing, in most cases (though combining series and out-of-phase wiring produces very interesting results in some cases).
Wiring the Humbucker:
Most humbuckers have the two coils of the pickup wired in series. With four-wire humbuckers you can install a switch to change between series/parallel wiring for the humbucker coils. If you aren't going to use a switch, series wiring of the two coils will provide the "intended" sound and usually a "hotter" output.
Hey! What Happened to the Sound?
When coils (or pickups) are wired in series you have to short across one coil (or pickup) to turn it off -- you still have to provide a complete circuit for the other coil or pickup. With coils or pickups wired in parallel you have to open the circuit to a coil (pickup) to turn it off -- shorting the coil will short all of the coils when they are in parallel.
Sorry to bother you, just sharing ideas that's all..