Seems like no diagram on the DiMarzio website matches mine exactly. Most put the neck pickup in parallel or split it, which I do not with the DP240 - I am not even sure if that would be useful as the DP240 is already bright enough in series mode. I haven't yet found my note but I can tell you what I did. I wanted the following positions:
1 = neck
2 = neck in parallel with the bridge in parallel mode
3 = neck in parallel with the bridge in series mode
4 = bridge in parallel mode
5 = bridge in series mode
I used a 4 level 5 way switch (what DiMarzio refers to as "multipole switch", aka "super switch" or "mega switch"). Each level contains 6 lugs, one of them is "common" - this is the one that the others connect to depending on where the switch is set. The individual switch positions are independent of each other, i.e. lug 1 has no internal connection to lug 2 or lug 3 etc. It is only connected to the common lug in switch position #1 but not in all the other positions. The four levels are identical so you can decide which you use as "level 1" and so on.
- I used the first level of the 4 level 5 way switch to control the neck pickup, which means the common lug goes to the volume pot input, and the neck pickup (red lead) goes to the positions where I want it to be heard, i.e. positions 1, 2 and 3. Green lead of the neck pickup goes to ground, Black and White are soldered together and taped off - they are not needed for my wiring.
- I used the second level of the switch to control the bridge pickup. Again, common lug goes to the volume (or to common lug of level 1) and the bridge pickup (red lead if it is a DiMarzio) goes to the positions where I want it to be heard (i.e. positions 2, 3, 4 and 5). Green lead goes to ground. Black and White will not be connected at the moment as we still have to implement the series parallel wiring with the remaining two levels.
For the series/parallel switching of the bridge pickup we will use level 3 and level 4 of the switch. Connect the black wire to the common lug of level 3 and the white wire to the common lug of level 4. As we want them to be connected for the series link in the switch positions 3 and 5, we would connect lugs no. 3 of both levels and lugs no. 5 of both levels.
For parallel operation, the black wire must go to ground, and the white wire must go to hot. This means that in order to get the bridge pickup working in parallel in #2 and #4, lugs 2 and 4 of level 3 must be connected to ground, and lugs 2 and 4 of level 4 must be connected to the volume pot.
That is the switch wiring, and this is the most complex part of the wiring. Volume and tone controls are wired in the normal way in my guitar so you can take a standard tele diagram for that.
Hope that helps,
Stephan