Turn indicator lever works only one side?

Getting back to this thread, I am interested in trying the cheap fix first. What I am not understanding, is there seems to be 2 cams available. 1 is just cam, the other is the cam with 2 wires on it? Since all of my lights work and I believe my issue is one of the little tabs has busted off, which Cam do I need?

http://www.amazon.com/Standard-Motor-Products-TW78C-Signal/dp/B000JKBVL8

or

http://www.amazon.com/Dorman-HELP-49301-Signal-Switch/dp/B000C5G5XE