Hi Grey,
I'm near Freo, maybe we can organise a multimeter testing session!

No leads are needed - just the guitar.
To test a circuit I would (and this may not be the best way, or the correct way!)
1. use the 200 ohm low resistance setting and check that the ground path is complete - by connecting one of the meter's probes to the inner part of the plug jack, and the other probe to the back of all the pots. The resistance should be very small (I get about 0.3 ohm).

2.Use the 20 M resistance setting to check each pot ;
i. by connecting the probes to the outside lugs (I get about 0.5 on the vol and tone pots)

and ii. by connecting the probes to the middle and an outside lug (here my readings were smaller)

3. Use the 200 ohm resistance setting to check the hot path from the plug jack:
i to switch (in middle position) (I get 0.3 )
ii. to outside switch solder (I get 0.3)
iii. to middle vol pot lugs (I get 0.3)

4. Use the 20 M resistance setting to check the hot path from the plug jack:
i. to the neck volume pot PUP connection (I get 0.5) NOTE I do not have my PUPs connected yet so you may get different readings
ii to the bridge volume pot PUP connection (I get 0.5).

I hope this helps.