I did not. I bought mine as a kit and has only one equalizer. No power or ground wires. I didn't even disconnect the battery like it tells you to before plugging it in. No issues. They work great!
The Biketronics is the plug 'n play one, does not require a power supply wire.
Easiest one I've seen, lifetime warranty, mounted by the battery on my '11RKC.
+1 this is the one I got too. Plug & Play. and its not your typical load equalizer that generates heat. I think they call it a load stabilizer or something, but it does the same job without worrying about where not to place so it doesnt melt wires. most equalizers generate heat.
Biketronics true plug and play into the connecter under the left side panel. No heat and no battery wire either. Lifetime warranty and takes care of all your directionals.