There should be two connectors, the smaller square one is your speaker wire. It should have two colors of each wire (set of 4), one solid and one with a line stripe on it. The other connector is rectangular long and skinny with maybe 10 or so wires in a line. That�s where you will get your ground, power, dimmer, lights etc.

hope that clears things up.

98.5 Black SVT with 34k miles Build #5683 Born on 4\15\1998 WR Headers GMK CAI Blaupunkt system fiberglass tweeter pods L.E.D. tail lights in the works