Originally Posted by
FBinNY
Non-index levers doen't have to be left or right since they don't have clicks to deal with. The one you put on the right side of the bar is right, the one left over is the left.
That's assuming they are indexed. If both are in friction, it doesn't really matter which is which. I'm pretty sure a few manufactures (Suntour, I'm looking at you) just used the exact same shifter for both sides.