Aftermarket light switch help

To replace my right handlebar controls (mine were physically broke) on my 1989 Yamaha radian I bought a new control made in china for the early eightys Virago. It looks the same except that it has a switch to turn the lights on or off. The start switch only has one pole so it won't turn the lights off as the stock switch did. I have all of the switches wired up except the light switch when I dropped it. It came apart and I'm not sure of it's reassembly. In the pic, the small white button you see between the slots has a spring under it that also acts on the switch plate. The problem is it looks like a ball bearing or something similar should be on top of the white button but I can't find it. I'm not sure it had one. The white plastic button gets stuck on the slots so I must be doing something wrong. Anybody have one of these aftermarket switches they can look at? My new switch looks like this ebay item: http://www.ebay.com/itm/Yamaha-Virago-X ... 3cb3dea5e4