That's all you should have to do. It simply plugs into the bottom of the large receiver board. Add smoke oil and go. If it doesn't work check to make sure that the switch is in the on position. If it still doesn't work you could try using jumper wires and a spare battery to test the unit, just make sure to connect the correct wires. Coloring seems to make no difference in these tanks, as my white wires were positive and the red wires were negative.
If you know how, you may want to use a voltmeter to test if you are getting current to the unit itself.