Sassafrassin'

[McCreed]

Hey dozy.

If you follow a standard schematic for 2 pickup/1V/1T but substitute a push/pull for the tone pot (or volume), then wire the push/pull between the middle pickup and toggle switch as per my sketch, you can add the middle pickup to all the standard 3 positions.

Unfortunately position 2 with p/p engaged will give you all 3 pickups on (in parallel). I've not found this very useful in strats, but it's the only simple way to achieve a "5-sound" 3-way toggle switch I can think of.

Sorry for the crude drawing. Too much coffee and I was just scratching to get something quickly.

Cheers,
Mick



Edit to add:
Of course, the ground from the middle pickup needs to be connected to where ever everything else is grounded.

[Simon Barden]

Hey dozy.

Unfortunately position 2 with p/p engaged will give you all 3 pickups on (in parallel). I've not found this very useful in strats, but it's the only simple way to achieve a "5-sound" 3-way toggle switch I can think of.

In contrast, I find the all three pickups on quite a reasonable sound. It's a bit thinner and honkier then the standard bridge+middle or middle+neck sound, but certainly useable in some circumstances, especially if playing something funky. Not really an all-out rock sound though. But it is a sound that should sit over the top of another guitar part and be heard clearly.