I have a 1999 GMC Suburnban 1500. I have 2 wires broken on the connector of the blinker/dimmer switch on the left side of the column. It is black connected into a 2-3" black box. I can fix the broken connectors if I can get it unplugged. Should it unplug? It is being held in by the plastic tabs or do other parts need to come off? The original problem caused by headlights to go off and on when adjusting the steering column up and down.