@Banginwithflavor, you could download the source and take a look at how it was done. You can tell the source was included because just above and to the right of the scenario applet window, you can see a big green 'button' that says 'Open in Greenfoot'.

The intersection of the wire to the bulb should be restricted to the base of the bulb (connect a wire to the glass of the bulb should not make the light work).

@GreenGoo, first click on the cable to select it (it gets a little thicker). Then drag the object to where you want it. Keeping focus on the objects is a little tricky, but you should get by.