How do I wire my EVX to run on 18 cells?

[RUSTY XL-5]

Well after reading this thread:

http://monster.traxxas.com/showthread.php?t=405138


I want to run my E-Revo on 18 cells (I have the waterproof EVX). :D Only problem is I dont have the extra $$ to buy some new packs, but I do have a bunch of 6 cell packs.

So I was wondering, what wire contraptoin do I need to create to plug in 3 6 cell packs (GP 4300's) into my esc? I have pleanty of deans plugs and extra wire I just need to be told what to do!


Thanks!