Pontiac 2005 Montana Owner's Manual page 269

If the channel switch, located on the right side, is on A,
the headphones will play the DVD or auxiliary device.
See "Stereo RCA Jacks" later in this section for
more information. If the channel switch is on B, the
headphones will play the rear seat audio system.
See Rear Seat Audio (RSA) (Without Entertainment
System) on page 3-111 or Rear Seat Audio (RSA)
(With Entertainment System) on page 3-113 for
more information.
To adjust the volume on the headphones, use the
volume control located on the right side.
Notice: Do not store the headphones in heat or
direct sunlight. This could damage the headphones
and repairs would not be covered by your warranty.
Keep the headphones stored in a cool, dry place.
Battery Replacement
To change the batteries, do the following:
1. Slide open the battery door located on the left side
of the headphones.
2. Replace the two AAA batteries in the compartment.
Make sure that they are installed correctly.
3. Slide the battery door shut.
If the headphones are to be stored for a long period of
time, remove the batteries and keep them in a cool,
dry place.
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