[sdiy] MAT Amp synth supply connector suggestions..

[jpdesroc at oricom.ca]

Hi list,
I'm about to chose a 'specific' pinout for
my future MAT synth supply connectors..
I'll probably use AMP 640445-x type PCB male connectors.
The number of pins is to be found..
I'll surely use some microcontrolers in some modules
with the analog chips.
 
I'm thinking of these possible pin arrangements:
 
#    function
1    +15v
2    GND
3    -15v
4    +5v (digital)
 
or this
 
#    function
1    +15v
2    GND
3    GND
4    -15v
 
or this
 
#    function
1    +15v
2    analog GND
3    -15v
4    digital GND
5    +5v (digital supply)
 
The modules supply cables will be made of #18 AWG stranded wires.
The the wires colors... not yet chosen.
Any suggestions?
Thanks
JP