Just got my first bike in probably 28 years - 198? Centurion Ironman with Shimano 600 components. The guy I bought the bike from kindly disassembled it and put it in my trunk after I had done a test ride. When I got home and tried to reassemble it, I ran into a glitch. It's easy to tell which way to put on the rear wheel, but the front wheel can go on with the quick disconnect on either the right or the left.

So - does it matter which way I put it on? How would I know the correct orientation if there is one?