http://pics.towerhobbies.com/image/f/futl0641.jpg

The battery plugs into the switch the switch plugs into the slot marked 6/B (#6 or Batt) The voltmeter can go into #5. This assumes you are using a single servo or two servos off a Y harnes on chanel 1.

IF you are programming two separate aileron servos, one goes on #1 and the other goes in #6. Plug a Y harnes into 5 and plug both the switch and the voltmeter in to the two ends of the Y harnes.

HTH

Tom