Lexus 2004 GX470 Owner's Manual page 358

NOTICE
D Close the input terminal adapter lid when the input
terminal adapter is not in use. Inserting a foreign
object other than the appropriate plug that fits the
adapter may cause electrical failure or short circuit.
D The input terminal lid must be closed before you fold
up the second seat.
To use the input terminal adapter, open the cover.
The input terminal adapter is composed of 3 input terminal
adapters.
"VIDEO": Image input adapter
"MONO L": Audio input adapter
"R": Audio input adapter
Finish
AUDIO
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