This is from Nordost and applies to their jumpers, and a single run of speaker cables...but one can do the same with two speaker runs (bi-wire w/out the jumpers). I find their diagonal approach helpful.
http://www.nordost.com/dealer%20downloads/NorseJumperinstructions_Eng52016.pdf
http://www.nordost.com/dealer%20downloads/NorseJumperinstructions_Eng52016.pdf

