Adcom GFA-4302 Owner's Manual page 15

Front/Rear Stereo (4 Ch.) without_GFI-4400
G
+12V
L Front —
L Front +
R Froni =
R Front +
GFA-4304
or
GFA-4404
R Rear +
R Rear —
L Rear +
L Rear —
Rear L/R
Rear (SP)
Front (A/B)
BE CERTAIN OF POWER/GROUND CONNECTIONS
Fig. 7