REDUNDENT GEEKLIGHT WIRING

While experimenting with my own DYI geeklight system, I came up with a wiring circuit that features flexibility and redundency not offered by typical two lead wiring.
Shown by the scematics below (forgive the utter crappiness, there's only so much one can do with ANSI), the wiring harness uses a single common lead - I decided to make it a positive common for eletrodynamic reasons, ie current always flows towards a battery's positive terminal.
Two or more lamps can be used, and it doesn't matter if the lamps are LED arrays, halogens, kryptons, HIDs plus ballast circuits, or any combo of the above.
As shown, a matching battery is used for each lamp; this can be anything, SLA, NIMH packs, nicad packs, alkies or lithiums. Using a battery per lamp doubles the runtime over using a single battery for all lamps.

The redundancy of this system is in that if a lamp or battery fails for any reason, the other(s) operates almost completely independant of the failed lamp and battery.

The system is also flexible in how it's operated.
You can keep it simple and turn all lamps on/off with a single switch on the common lead:
---------------------
| |
| - |
# Batt1 * Lamp1
| + |
| S1 |
---------^-----------
| |
| + |
# Batt2 * Lamp2
| - |
| |
---------------------


or you can put switches on each lamp's hot lead for independant switching:
S1
---------^-----------
| |
| - |
# Batt1 * Lamp1
| + |
| |
---------------------
| |
| + |
# Batt2 * Lamp2
| - |
| S2 |
---------^-----------


Or control each lamp independantly with hot lead switches, and all on/off with a master switch on the common.
S1
---------^-----------
| |
| - |
# Batt1 * Lamp1
| + |
| MS |
---------^-----------
| |
| + |
# Batt2 * Lamp2
| - |
| S2 |
---------^-----------


Feel free have geeky fun and modify this circuit in any fashion your noodle can come up with. Don't worry, it's got a GNU licence on it.