Whats better than a pair of EMG 40DC's?

I took some pics of my setup:
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Those next to the green thing are the tone knobs, and those next to the fixed battery are the volume knobs. The guy who installed it for me said that these black tubes (looks like some plastic straw) are better than isolation tape for protecting the wiring. In the end there´s room for one more battery, but who cares about the active EQ anyway? : P
 
Awesome, thanks for the advice, i reckon when i can afford to get this done, i'm probably just gonna go for volume pots and leave the rest as duds...