Alien Bees polarity sync cord issue.

[kylyo]

Just received my AB order and unfortunately my camera wouldn't fire it. After reading through their frequent questions on their site I have learned it is because polarity issues (that are known) with my EOS Canon body and the PC port. I couldn't find anything on their but I really think they should give this info on the description page of the flash units. It is super annoying to have to make a second order for a stupid little cord.

Anyways, is there anything else that do this I can purchase real quick at like a Best Buy or something?

This is what their answer section says:
The sync cord that comes with the lights is one piece, center positive. If your camera has negative polarity, you may want to order our two-piece sync cord. One piece in this set is a short white cord that has the small PC connector that goes in the camera on one end and a two-pronged “household ac” type connector on the other end. This pronged end plugs into the socket on the long black part of the sync cord. If you look at the prongs and the socket they plug into, you'll notice that they are two different widths. Normally, they should be plugged together so that these widths match. When you connect them the other way, you are reversing the polarity. If your camera is not tripping the lights, try reversing this connection.

Thanks