1995 Buick Riviera Owner's Manual - Page 103
1995 Buick Riviera Manual
Page 103 highlights
Auxiliary PowerReceptacle An auxiliary powerreceptacle is located on the lower right side of the console. When the ignition is ON, you can plug in accessories requiring electrical power. If your Riviera has no console, the auxiliary power receptacle is opposite the cigarette lighter in the ashtray area.